It was an engine he got out of the junk yard. Was ran on 93 octane at 16lbs, 100 octane at 22lbs and E85 at 20lbs for a few years. Made 404whp. Next pull rod came through the block mid rshared_pm (6000rshared_pm maybe). A few months later with the new engine the Walbro fuel pump wouldn't pull fuel. The car was a lot of fun for a long time.