Disc brake conversion (70 Dart)

I Like the part about tires.
Most of us run 235s or less up front, and even 10" drums can lock those up at 35mph, maybe more with better than cheapo shoes. And the speed limits anywhere in My province are 70 or less.
Like Blu said, the tires are the limiting agent, and in Manitoba,lol, the roadways would be the next limiting factor. And nobody needs to be an ME to figure that out.
If I had an extra G to spend, it wouldn't be to improve any factory DB system on a streeter.
BFG radial T/As and Cooper Cobras, are great looking tires, but they are so easy to overpower. Learning to drive on them, with 350/400hp,is a whole nuther story.