It is easier to get big cheap horsepower out of the BB chevy engines. To help you determine gear ratios and quarter mile times as well as any other performance variations email me more specs on the car (weight, compression ratio, transmission, converter, tires). I will have PC HOTROD calculate the performance in any configuration you specify and email you the reports to you.
Send the specs to the following:
Check this site out so you know what you will be getting in return.