OK.. got a bunch of questions here.. First off, I'm looking at a 1988 3/4 suburban 2 wheeler with the 454 tbi and TH400. Minor rust on rear quarters and rockers, good interior, runs good. The guy wants $1200. good deal? Second, how big of a pain would it be to swap this 454 into an older truck with no computer setup? Third, I was told that TH400's from two wheelers are will mate to a NP205 without changing the mainshaft. Any truth in this? Thanks for any help.