as u all know i am in the prosess of rebuilding a 350 and ive been looking at piston rings for a while and now i can get a set of stock rings through Summit Racing for about $20, but they had a set of high proformance, top of the line, best money can buy "Plasma-Moly" rings and i didnt know if shelling out $75 bucks for the plasma moly rings would be worth the proformance gain and if anyone has any information id really appreciate it