New/old motor for the duster ..

Bring it on!, if it gets you back to the track then I'm all about it lol. If I was you I would throw an 8.25 in and keep the dana but I get it.
I'm already building a motor and trans and giving that away... Don't want to go spend more money on an 8 1/4....
I'll be leaving some goodies so I can pull a little $ out of it...
It's a delicate balance....
I think I read somewhere my TA is supposed to do low 14's.....