I don't know exactly based on your option list but if you figure 3200-3400 you'll be pretty darn close. If you do some "creative" lightening around 2,900 should be attainable without to much headache.

If you want to built a FAST Duster I'd suggest a 71-72 because of the better TQ carb




*That white 71 was sure running hard to run an 11.66 Must have a well planned and put together small block in that bad boy!