Flywheel Question

Again great info AJ. I Won't probably ever quarter mile this car. I might 1/8 it once, if ever. I'm swapping the trans because a 3 speed 727 is boring and with the 3.91 that im currently running I can't even begin to think about putting it on the highway. I just want a car that's fun to drive and row gears. If I want to go racing I'll take my supercharged street machine that's fater than my little humble 340 dart sport will ever hope to be.