Yea we are building a set of 1 7/8 headers and I got an 850 holley but might build a 950 instead because it's just an out right better carburetor. I have a set of 5.13 gears and I notice alot of people run a pretty low gear it's just I don't know how we would make the 1/4 with it. We have a 29.5x10.5 tire and lite car. I don't know if changing the converter size and stall would either help or hurt the rpm's through the traps in the 1/4. I really don't want to be screamin the motor at 8000 rpm every pass but yet I want it to run good lol.

Your engine just isn't going to accelerate well with that converter, I would estimate your engine makes peak torque around the 5000-5500 rpm. Your converter would be quite inefficient also, so you would probably see a reduction in your trap RPM.
As anyone will tell you, make one change at a time.

I'm not too sure you are going to be running a 10sec 1/4 shifting at 6600rpm with a stock stroke 340 and w2's. These things need to be wound up.