Really!?! Had mine gone through in 2020. New valve guides, valves, springs, and hardened exhaust seats for $300. Of course was having the engine done too. Cleaned and painted the block. Cylinders bored .40 over, new pistons, rings, rod and main bearings, cam bearings, stock cam, timing chain and sprocket, crank polish and a gasket kit. It came to just over 900 for everything. I did the reassembly. They did a great job. Sauer's Machine in Central Point OR.