I currently have 3 different manifolds that I want to try out at the track. RPM Airgap, Offy single plane dual quad, and Eddy dual plane dual quad. Next purchase in the intake department is the Weiand 1995 tunnel ram. Planned carbs are a pair of AVS2 500 cfm or a single 750-850 AVS2.
There's lots of other little bits here and there I can't remember right now.
Since I've never done it, I want to try out a crank trigger and coil near plug setup. Yes it's going to cost more money, but I want to LEARN about it. I learn by doing, there is no substitute for experience.
What you want out of your engine is going to determine how much you pay for internals.
Here's a starting point.
@Ottmundr do you already have the ProMaxx heads? If so, can you post a picture of the combustion chamber and tell us what size chamber you ordered? I assume they get a 63 cc chamber by milling the same casting from the 65 cc chamber, but I am curious to see either chamber since the pictures online are all over the place.