I just got this, it looks like a 18rgeu, with 92mm pistons and pretty mild porting. stock cams. I am going balls out on this thing. it's going in my corona mark II. very excited to find this so close. it was in a storage unit 30 miles north. craigslist! I almost fell over when I saw it in person. it was shrink wrapped and had the super trick valve guides, a milodin oil pan, and lots of head work. curiously, it has someone 's name stamped into it. dr. bodiex.? i havent fully disassembled it, but it looks very clean and compression is very good. any more info from the gurus here?