G-bar or Quadralink ?, 73 camaro

[The T-man]

73 camaro, going to mini -tub it, and thought while we are under there,
G-bar or Quadralink ?

or the big question, is it "really" worth the time and $ for these to get a 335 rear tire? I hear stories of some people getting lucky and stuffing a 315 under some stock 70-73's, which I could be happy with and save the 2-3K$

any truth to that? rolling the fender lip or bashing in the wheel housing with a BFH is fine w/ me