I am selling a set of Brand new. PROBE SRS FORGED 30 over 347 coated pistons. There made for TrickFlow Twisted Wedge heads 2.02 1.60 valves. There 10 to 1 compression. Coated on top to hold more Nitrous. I paid $160 for the coating. They have 9.12 wrist pins and locks. And Brand New Preformance Circle Piston rings. Everything brand new. NEVER Used OR installed. In the box. I want $500 bucks for it all. I paid $700 bucks for them. In Coast High Preformance. $150 for the piston rings. And $160 for the coating. So at $500 for it all. Is the best I can do. No trades. And i stand firm.