I bought my truck with an over the rail duraliner bedliner and can't stand the look of the plastic on the rail. I want to modify it and put bushwacker bed rail caps on. I was wondering if it could be modified into an under rail bedliner. From my understanding pendaliner/duraliner and the ford factory bed liners are all made by pendaliner. Has anyone had any experience with this type of modification or should I just buy an under the rail liner and save myself the hassle?

It is easy to do that I know ford charges about 3 bills for their liner and a penda liner is probably going to set you back about 230 or so. Basically you are going to come down off the top of the rail about 1/2 inch and cut the top rail off. Use a jig saw then come back over it with a razor knife to clean up the edge. At the front and back that is where you will have to be careful... Go look at a few under rails so you get an idea how they go there it doesn't matter what kinda truck you look at.

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1999 Ranger 4.0 and extreme Snap-on tool fetish

i do not like plastic liners, they encourage rust.

Or you can take the liner out and grease the bed inside then out the liner back in. I've done this.

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2004 Ford Ranger XLT FX4 Level II : Weekend Driver (Oct. 2013 TOTM)
2003 Ford Ranger EDGE 4x4 : Daily Driver
1991 Ford Ranger XLT 4x4 Small Block Stroker : On going project
1994 Ford F350 Turbo Diesel 4x4, Short Bed Single Cab : On going project
1967 Ford Mustang Coupe : Restored to original

Just get a spray in bedliner. Much better than the plastic.

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Since the mid 90's beds have been made with galvanized metal to prevent the rusting out of the bed. The metal is tested to 10,000 hours.

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1999 Ranger 4.0 and extreme Snap-on tool fetish

If you're going to buy an under the rail anyways you might as well try to modify yours first. Nothing to lose really.

I agree with others that you are better off ditching the plastic liner (unless you live in a dry climate)

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[2003 Ford Escape Limited 4x4 3.0L V6]
- Kenwood TM-281A VHF Radio - ScanGauge II Monitor - 110000 KM
[2003 Ford Ranger XLT Fx4 4.0L V6] - Build Thread
- Pennzoil Platnium Full Syn - .410 Gears - Bilstein 4600's - 1750lb HD springs - ICom 2300H VHF Radio - SCT X4 Tuner - Lasota Racing Tune - Valentine1 RADAR/LIDAR Detector - Smittybilt XRC-2 Comp 9500LB Winch - 245/75/R16 General Grabber A/T2's - Custom front receiver - ScanGauge II - Optima YellowTop - 113000 KM

This may be true but 10000 hours comes quick if you constantly have water trapped under your bedliner and it doesn't dry for 3-4 days.

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Not a F150 sellout? Click HERE

That is why there is drain holes in the bed at the front.

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1999 Ranger 4.0 and extreme Snap-on tool fetish

Cause they never get clogged with anything and correct me if I'm wrong but aren't they like 3" up from the bottom of the bed.

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Not a F150 sellout? Click HERE

Long story short...

Lose the plastic, drop-in liner
Get your bed bed sprayed with Line-X or DIY.

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-Link-

Spray or roll on would probably be a better choice, but if you already have the plastic liner, you could trim the top rails back a bit & use a heat gun to soften the plastic & carefully mold it to fit shugly under the rails.

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Where are you located, I am selling the under the rail bed liner I had in my 2000 Ranger.

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2000 Ranger Extd Cab XLT, 4X4 Off Road, 4.0L, Auto, 8.8 - 4.10's, 01 grille & lights swap.
69 Mustang, modified 5.0, & 5spd.(project)
99 Explorer Sport, 4.0 SOHC, Auto, 8.8 - 4.10's, PW, PL, PM, Cruise, Tilt. (Wife's DD)
05 F-150 2WD Regular Cab. ( My DD)

Jersey

I live at the shore if your are interested in buying an under rail bed liner. PM me & I will give you a fail price.
Mike.

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2000 Ranger Extd Cab XLT, 4X4 Off Road, 4.0L, Auto, 8.8 - 4.10's, 01 grille & lights swap.
69 Mustang, modified 5.0, & 5spd.(project)
99 Explorer Sport, 4.0 SOHC, Auto, 8.8 - 4.10's, PW, PL, PM, Cruise, Tilt. (Wife's DD)
05 F-150 2WD Regular Cab. ( My DD)