ok so give us a list of what you replaced/had done/or did your self and the cost if you dont mind I may do this this winter to my good ol 426 First of all there was nothing wrong with the top-end only that it had 300plus hours on it and I was getting nervous. The local Yami shop wanted approx. $1200 to do a complete top-end, parts and labor. Not only did I want to save money but I also wanted to do as much of the work myself as I could, although I'm a novice mechanic at best. So I broke it all down and then took the head and cylinder to the local shop. They honed the cylinder and fit the new valves and seals in the head. I then reassembled with new piston, rings, wrist-pin, c-clips, and gaskets to the point of cams and brought it back to them to fit the new 450 E cam, check timing and adjust valves. Then back to my garage one last time for finale reassembly. Total parts $600. Total labor $300. Started first kick and I saved about $300. But the best part by far is now I know how this thing works and it's good for another few years.