Told you so, I guess Offy got a little slower from a few years ago. I think PAW had these for $279 a LONG time ago when I had a 273...
I wallowed the bolt holes of a Performer and it bolted right on a small bolt 65 273 with a washer under each bolt, ghetto but it was a 4bbl for a 4bbl motor after I cracked my original commando intake trying to torque it down over a missed roll pin..:-( 28 lbs lighter and ran better!