If you want to run 8.50 the car better be certified to 7.50 which adds MORE weight to the car if it isn't already up to spec. Gotta be able to cover the 8.50 in Summer heat so it better run at least 8.30's.

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