Converter Quiz

The car is a 76 Dart Swinger.
360 forty over
Magnum Heads 59 cc/ 1.6 rocker ratio
I Beam Rods
Speed Pro Pistons at about 10:5 compression
Lunati cam 488 @50/ 235 Dur
will be adding Pro Stock or SS springs

Will run 1/8 mile mostly with about a 4:56 gear once a month and a couple days a month to drive and cruise.

My main question concerns my confuesion over the flywheel and converter balance and who makes one for the combo at 3000 to 3500 stall.
Thanks again