Walcks4wd.com probably has parts. We have a '52 CJ3a and they've had everything we've ever needed.
HIS: olive drab 1952 ****** CJ3a, stock-ish
OURS: silver 1995 Grand Cherokee ZJ automatic 6cyl.
4.5 Rubicon Express lift, 33x12.5 Baja MT Widetrack tires, slip yoke eliminator, Nates4x4 winch bumper, Rusty's skid plates, 8.8 rear end, 4.88 gears, full roll cage and 4 point harnesses.
MINE: 2003 TJ Rubicon, BB, winch, Duratracs, homemade bumpers, RC sliders, Taurus fan upgrade, tranny cooler, and more to come!