Porting small block 915 j-heads

I run 220 seat 500+ open
I dont like bronze for endurance
So where is the ops grinder and carbide bits? Let's get to the guiding as he goes...
Whoever leads him to water has to buy him the jb weld , low psi cap..and the stop leak!
I don’t follow everything here.
220 seat (spring pressure ? )
500 + ( cam lift ? )
open ?
endurance ? Isn’t that the same as wear?
I can take a picture of my “arsenal” if you want. Have to wait till tomorrow tho.
Valves springs and everything were shipped today from US. Must have them home before new guides after that grinding begins