Thanks Roy (@SGBARRACUDA)

7 1/4 sure grip?

Heard about em for 25 years. That's first I've seen in the flesh.

Yeah and it's a Dana Powerlock clutch type 4 pinion unit. Bout the strongest a 7 1/4 can get. It looks really clean too. I'll get it back together in the next few days. The axles and brakes were off but I'll get them all cleaned up too. Get it all back together and see what everything feels like. Axle bearings look and feel good. Looks like a good unit so far. Probably be all a slant 6 will need. That 3.90 should wake Vixen up purdy good. lol