FS: SBC 305, never used set of Silv-O-Lite Pistons, PN H1482+0.030. Keith Black Series, Hypereutectic Cast aluminum, Flat-top with 4 valve reliefs. Compression Distance (in):1.540 in. Wrist Pin Style:Press-fit Pin Diameter (in):0.927in offset Piston Ring Thickness:5/64 in. x 5/64 in. x 3/16 in. With stock rods / pins already installed. Big end of rods has been honed, I do not know to what size. Weight of rod-piston assembly is about 1,305 grams. These are a nice set of replacement pistons-rods. If you want 300+ HP and nitrous, I wouldn't use these. If you want to freshen up your 305 with a +0.030 overbore and reduce the weight from stock, this is your ticket. The Silv-O-Lite catalog lists these as 9.5-1 comp. pistons. $150 / offer + shipping for the full set of pistons and rods. Located in SE Michigan, keep in mind the shipping weight will be about 25 pounds if not local pickup.