Hey Guys! I have a 1970 Nova 2 door. It has a 230 I6 with a three on the tree. It has about 150k miles on it, and I am about to out in a new head gasket. It has decent power, and can smoke the tires a little, but I would like a little more "oomph". I like the "relative" fuel economy, and my father likes the whole original thing. I love the three speed as it is a lot different from the five speeds I'm accustomed to. My question is should I swap in a small block Chevy, or just tune my six a little. What can I do to my six for a little more power. I don't want to totally hotrod it, as a V8 would probably be more cost effective.