Transmission/Torque converter ideas

I made a thread on here a couple of weeks ago asking for advice on my 340 duster. I've already sent in the motor to be rebuilt, so the next issue is the transmission. The 340 has a 490 lift cam, ceramic coated headers, 3 inch exhaust, and a 650 cfm carb. I plan on throwing on edelbrock aluminum heads, and an 850 cfm carb. I also have a 8 3/4 with 3.23 gears. I've been looking into cope transmissions, but I'm not really sure where I should go.

Any advice on a transmission and torque converter to throw behind it that will not only be good for now, but also be good after the changes I plan on making?

Thanks.
Author: admin