I think you mean fleetside, not flareside, flareside is the same as step side, since the wheel wells "Flare" out from the rest of the bed.
And im pretty sure no one makes fleetside panels in fiberglass, there all metal
An 01 bed will fit on yours as long as they are the same box length
2001 Mazda B-3000 CabPlus "FX2 Off Road"| 3.0 | 5 SPD | 3 In Spindle Lift | Belltech Shackles | UltraGauge |Alpine Head / 10" Kicker Setup | Air Box Mod | Add-A-Leaf| Thrush Welded B4 Rear Wheel | Kobalt Box | Cobra 19 DX IV | Custom PA Speaker | Front/Rear Tow Receiver | 2X Aux Lights | Hideaway Strobes | Back Rack Safety Rack | Amber LED Strobes | Blue LED Strobes | 265/75/R16 General Grabber AT2's
Originally Posted by Clinton
I like little girls...........