the demon 650 I had on my 327 with similar setup worked amazing, however when I went to a 750DP of my buddies, it made quite a bit more power but seemed to sacrifice some low end torque. I think I dumped too much fuel down low, but when i was pulling from 2k+ I saw a difference. Now with a bigger cam and the 4speed I will be going with a 750. Its your choice but to be honest I think a 700 or a 750 would be my bet.
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