600 CFM, all I need. Check my math!

You can pick up a used 1850 holley for cheap. It'd be interesting to run both at the track to see which one runs better.

As a side note, 17 years ago when I was in high school, I ran an 1850 on my 408 Duster. It kicked *** around town and ran 12.70s with a lot of mismatched parts.