Centering the rear wheels

Local guy here had a 70 dart street car, 440 tunnel ram stick car. He put new quarter panels on the car and moved them forward all the way to the tub, left the rear end where it was.
Wow that's pretty crazy. Myself I like the longer wheelbase look. I would like to talk to the prostreet guys to see how far back they moved the rear. A 1/2" is a lot of work unless you need tire clearance.