Any 318 Performance tips?

In his first post, he states very clearly, no money for Pistons or heads.
The best option at this point is to simply reuse the stock heads well preped. Home polishing of the chamber and exhaust port is what he can do inexpensively.
A well don't valve seat multi angle job should be done.

I only wish I could provide the seat cut angles.

I read the first post. I'm focusing in on the "no money" part. A pair of 302 heads could probably be had for about $50, bolt them on and go. This would almost positively be cheaper than the head work you're suggesting (even if he had to pay more for the 302s, and if I'm understanding what you're saying correctly), which is more in the spirit of "no money for pistons or heads" than spending more money on the heads he has. I know there's a lot of varying opinions about 302 heads just like there is on a lot of things, but there's also a lot of people who say certain things won't work, when in fact they do.

I'm NOT saying that what I am saying is the only way to go or that what you are saying is invalid, but what I am saying does have merit from a different perspective, which I'm offering. Rumble, I always respect what you say and your advise, but I guess there isn't room for any other perspectives or experiences, so I will bow out from offering further input here.

Carry on.