Holley 750 (vacuum) or 650 double pumper or Thermoquad?

Yea you're probably right I forgot about the no jets or metering rods unless you rob old thermoquads and the secondary throttle bushings on the 750 are'nt really that great. I'm not sure that my skills and tools are good enough to correctly do the shaft bushings on the 750. The 650 falls in line with the cfm calculation formula. Now that I think about it I really only have a slightly warmed over motor. I was thinking though that the 650 dp might bog it??????