1st set - used Venolia, bore 4.350 (.038 over), 1/16-1/16/3/13 rings, 3.900 stroke, 12.1 compression, pin diameter .990, pin weight 172 grams, piston weight between 585 and 587.5 grams, comp height 1.583+-. Made to run a 7" rod. In very good condition $350.00. 2nd set - used CP, bore 4.358 (.046 over), 1/16-1/16-3/13 rings, 3.900 stroke, 14.1 compression, pin diameter .990, pin weight 172 +- grams, piston weight between 585 and 588 grams (used with the same 7"rod), comp height 1.575, only have 58 documented passes down the track. Very good condition $350.00 These still have the rings in them, a very expensive ring package when new. These two sets were custom made. 3rd set - SOLD Forge Seal Power new in the box for 430 cid .030 over. 10.1 compression $330. Both sets are out of my race motors, always run on 114 octane. On either sets I would used new pin clips and new rings. I can deliver them to the nations in May, or ship. Located in Fl. Please pm me if you have any questions. Fernando