Got the bores off this evening and just as I thought the front cylinder has lots of piston scuffing on the front and rear face. The rear cylinder has some scuffing on the rear side only? Bores look like there is some wear but I don't have a bore mic and I cant get them measured till monday at the machinest. Kinda shocked at the amount of carbon builup on top of the pistons, seems excessive for an injected motor?? Previous owner could have run junk gas which could had caused the detonation that scuffed the bores? Either way looks like a rebore and new pistons and KACR units for the cams!