Is it a keeper? Paint it what color you like. For resale find a '69 engine and paint it the original color; originality is what's selling the long hoods these days. Or go wild and drop in a 3.6. These seem to do pretty well too. So mild or wild, nothing in-between. Hope this helped.
BTW, you are probably already upside down. Do a decent restoration and wait a few years and you may come out ahead.
Personally it sounds like you have the perfect car for a 3. something transplant. If the engine isn't original anyway, why use a 2.2? Think big. If you are going to stick with the 2.2, at least stroke it to a 2.4.
My $0.02