I have a set of used 390 +.03 factory cast flat top pistons if anyone is interested in bumping their compression on the cheap. Don't know how many miles are on the pistons but the rings only have a couple thousand miles on them. I measured a few of the pistons and they measure good. Some show some scuffing but it seems more cosmetic than anything. One piston is new(er). 50.00 + ship, or 75.00 shipped, whichever is cheaper.
Message me if interested.