Lots of good books out there if you want to save some money and build it yourself. I bought three ATI cases and bellhousings for my cars and built a 1.69 low gear for my heads up car, a 1.98 low gear for my small block bracket car, and a 1.80 gear for a spare or green Duster.

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