copart.com for wrecked vehicles at auction - you could possibly get an entire front end write off for 10K and have a rubi transfer case if you don't already have one and there is the odd built jeep on here. My friend/neighbor has bought about 15 cars off here and rebuilt them for profit. It's the real deal.
Doesn't help you with your door, but might help others.
carpart.com for parts.
I'm not having any luck finding parts off of carpart right now for JK's.
Hood, door, fender, grille, transmission, nothing came up.
I might call them and see if someone live can offer some help in my search parameters for JK parts.