I'm assuming from the 6.20s you don't drive this thing on the street. That being said, I think the 8896 is you best choice. It's designed for your type application. The 9375 was designed to be used in a dual 4 application.

I don't think you'll see a lot of ET difference unless your current carb isn't working well but that 8896 should make a major improvement in how clean and crisp the motor runs.

When I went to the 8896 from an old version 850 my car didn't go a lot faster but it sure worked better. Throttle response and all that.

Then I had the new carb worked over by Gary Stinnett and REALLY saw some improvement.

Myself and a lot of my friends run the 8896 in our Super Gas and Super Comp cars with anywhere from 572" on up to 632" motors running mid to low 8s.