This block has been vated, new cam bearings, bored .030" over with a block plate.I ran it 1,500 miles, dropped a valve and ruined a piston.Did not damage the block in any way. A light hone and it will be ready to build. It has F1S or G then E stamped on it. build is O G 12. I would like $125.00 for the block. No cracks , no scoring in the cylinders, all threads are good.Main caps included of course.I can bolt it to a pallet to ship.