fhsmith1, i can get you about any size piston you want. i don't have any on the shelf at the moment but when someone wants some, i see exactly what they need and order them from there. it takes me about 3-4 weeks to get them and the customer has just what he wants. you do use a little more clearance on the forged pistons than the cast ones. i don't see where that would affect cylinder wall life one way or the other. the rings that usually come with them are the standard 3 ring style with 3 piece oil rings and 2 compression rings. the top ring is usually chrome. they retail for $350.00 a set and are really nice pieces. i can for the most part accomodate varying stroke lengths and setups so that's why i order them instead of stocking them. everyone wants something different.