xs750 front end swap

Hey some in doing a old school 70s chopper build with my '79 xs750 special and I'm looking for some advice on going about hitting a Harley front end or possibly a Springer. Taking my time with this project given that it's a 750 but I'll be posting updates whenever I got the time. I'm new to...

Is it just the 750 Specials that used the smaller discs and had the different caliper mounting points? I was wondering if I could just swap in a 750 front end with a new stem and triples and be done with it. The stock forks are hopeless, even with Progressive springs and the preload cranked up...