Other than the dealer or a salvage yard, I don't know where else to get them. But they aren't fancy items. You can fabricate one from any basic form of rubberized sheet, such as indoor/outdoor v-groove matting, preferably the type with fabric mesh in the base. You can get the matting at HD or Lowes. I'd double the thickness on the matting by meshing the v-grooves together. You could glue them together with contact cement to keep them solid. Just a thought...

1997 Sportage 4x4, auto-trans, Warn manual hubs, 4" UPYOURKIA front lift, TJ 106AA rear springs, 2-5/8" body lift, 31x10.50 treads, SmittyBilt SRC front and XRC rear bumper, swing-out tire mount, OBX LSD front diff, Track Finder rear locker, 5.38 R&Ps and... really crappy gas mileage! <img src="/forums/images/graemlins/shiner.gif" alt="" />