I will never again take on a full interior, but at Audio Empire we did a dozen or so. Every vehicle is different, but to ballpark it - expect to pay at least(I said AT LEAST) 5000$ for a full custom dash build, and 2500$ for 2 fully custom door panels. If you're serious about getting it done PM or call me, I know someone capable of doing it and he'll give you a good deal for good work.