Between tom4bren, vt_maverick, LDub, and myself, we've definitely exhausted the parts availability issue/question, but I can tell you still have deep reservations....and it weighs 2 tons, gets horrible MPG, & will never be considered fast by a long shot, so, is it really for you..... ?
So here in one place:
~Isuzu warehouses thru Merlin at St. Charles
~Forum members
~aftermarket sites such as vt_mav described
~ebay
~salvage yards (with Cash4Clunkers providing 15 "new" VX carcasses to pick over)