Push rod clearances looks factory but may have been opened up, has aluminum MT rods that look to be 6" long, could read on the bottom of the pistons H400 040 which makes me wonder if those were chiivie pistons? Were full domes with nothing milled off, has a huge roller cam that I'm going to measure eventually, big aluminum oil pan w/solid windage tray and scraper, crank is solid w/out holes drilled threw the end throws and has small radius on the rod journals, has offset dowels for fine tuning the heads which Ed used to sell, My friend was told that it had been on a dyno and was around 600, would that be a stretch?