Well, there are a few other items; but, I'm sure you are already aware of them. Things like exhaust, wiring harness, and distributor (if you aren't talking about a complete carb to pan motor that you're dropping in, and instead are referring only to a long block.)

All that being said, I think that financially, you're making the right choice because of the simple fact that you can make H.P. much cheaper with Chevy stuff than you can with poncho stuff (a lot of Pontiac guys would scold me for saying that).

I went the Pontiac route with my Firebird, and it is a lesson that has cost me quite a bit more than I would have spent going the other way.

Anyway good luck with the GTO.

Dutch