out of the two you're gonna want the first one cause its a 8.8" rear. The second one is a 7.5" which is smaller and weaker. Take a look in your local junkyard or pick and pull and look for a ranger axle with a R7 code (8.8" 4.10 limited slip).

hey dude,

thanks for all you help on my re-gearing post. I'm still a little confused,

is this what I'm looking for to put in used 4.10 gears? will one of these fit my truck and is it pretty easy to install?

http://www.ebay.com/itm/RANGER-MAZDA...54c898&vxp=mtr

or

http://www.ebay.com/itm/97-FORD-RANG...2c2042&vxp=mtr