I went from a 1.76 powerglide gear to a 1.98 and my 60 foots went from 1.34-1.36 to a 1.25-1.27 sixty foot times. If you need a price let me know and I will hook you up with the guy I bought mine from. (ATI)
Might be able to save you some money.

1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27

Livin and lovin life one day at a time