I have seen a few running around Encinitas, Ca.
It's not a Comanche dedicated website (mostly Cherokees), but it's pretty much race trucks and fiberglass and stuff, and since they're so similar... There's a small forum; I haven't really gone through it, but...you know...maybe there's someone who can help you out.
I dunno. www.JeepSpeed.com
Somebody's got way too much, uh, time on her hands...
85 Xtracab Toy, 98 Warrior