[Clyde65]

OP, I would try to find an experienced tuner close to you, one that would dyno your swap IF you have made any power adds, meaning Cam etc. If you are just stock with headers and want VATs and rear O2's removed, then I would not hesitate to get a mail order from some one like Nelson Performance, they will mail you an ECM that has been tuned and you send yours back to them. They do this because if their tune isnt what you want, then you can throw your old ECM in and it will run ( after the first flash that is) I did this and they have been very helpful.