318 Pistons: baffled

ENGINETECH P15168 Info
Flat top w/ 4 valve reliefs; 1.741" CH; Use 39158 rings $8.90 a piston - set of 8 req/

I bought a full set and std. iron rings. Bore are good...just a quick honing needed.
again, stock perf. rebuild.

On my originals: only have 7, 1 damaged. :( thats why I'm going with a new set.