Chris, if you have any reservations about making 4X4/offroad parts, please take a peek at our offroad model specific site:
http://www.offroadmodels.proboards.com/
Us offroad builders have a substantial list of aftermarket parts we seek, and a few casters such as Alan @ Ma's resin, Casey himself, and Steve Perry (not the Journey singer ) have stepped up & provided us with some specific parts, but we need MORE!!!
Not to discourage, but Steve already has some D44 stuff and a NP205 case:
http://hstrial-calnagacastings.homestead.com/Store.html
Let me know if you have any questions, we've done some polling on ORM to see what's wanted/needed from the aftermarket!