80's 360 in a 60's mopar

I would take all of the emissions equipment off, slide a nice mild cam in it, good intake and a decent size 4 barrel and call it done.

Unless you can stand 1000 bucks for headers, you will be running manifolds, so stay mild with the engine.

Leave the compression alone. You will gain leaps and bounds more power with simple bolt ons than a jump in compression will ever bring. Besides, this is a street car, right?