DO NOT BUY! Magnum Farce 2" drop spindles are junk
I even had to get custom rims for 73' up LBP disc swap on my 69 GTS. Unless you want to run 5.5 or 6" wide wheels there were pretty much no off the shelf rims that fit (without spacers). In fact most disc brake upgrades push the track out wide requiring a more positive offset wheel.