I got the gears from a member

Darter6 said
As 17 year old I ran 5.13's in my daily driver 340 4 speed Duster.
The things we did when we were young.

Had a buddy who ran 5.13s in a 57 chevy with a 283 and a four speed. I thought he was crazy. I was only running 4.56s behind my 350/4sp.