1972 318 la
I was in the same boat as you, but I opted to go bigger, so I found an LA 360. Originally I was going to just drop it in because it ran well and had low miles. Well things snowballed, now I have a brand new motor...
Its been bored .30 over, comp XE268H cam, edelbrock heads, weiand intake, new holley carb. Should be high 300s to low 400s, hard to say, Ill be firing it up in a few weeks so I don't even know how well it runs yet.