66 B body 8 3/4 to 72 A body swap

I absolutely recommend front disc brakes. When you brake the majority of the cars weight transfers onto the fronts. Given the brakes modern cars have we have to step up our game to stay safe.
As for track it’s been over 30 yrs since I’ve run anything. I can’t say anything there. ( I ran all 6 stuff because there was almost a half mile to stop)
And I can appreciate wanting to load the family up for an early evening cruise and ice cream