I want more Hp for my 318

i've heard that about the best thing that you can do to a 318 is head work. and not even going out and buying the $1000 heads as much as giving it bigger valves and opening up the intake and exhaust by porting and polishing. I read an article in mopar muscle magazine from quite a few years back and they made an easy 350 hp. from their 318. all they did to it was the head job a .30 bore and an aftermarket carb. and intake which you already have. If you were considering keeping this motor for a while i'd highly reccomend doing the head job. there's no way it can hurt. hope that helps