can I use 3/4 inch wheel spacers on my rear rims without having any problems , I'm thinking of the ones that just slide over the studs . I'm using moroso 1/2 inch studs on the rear .

I wouldn't use anything more than 1/4" - 3/8" spacers. Any thicker and bolt on adapters are a must for safety...

I have 7/16" ones I got from Summit and to me they are about as thick as I want to run..

I also have 1/2" x 3" long Al-thread, Grade-8 bolts on the rear axles and 1/2" x 3" long Allen Wrench hardened studs on the front b/c of the casting webs that are on the back of the hubs. (All from MOSERS)...

I think that thickness is going to be a problem b/c it's too thin to be made like a bolt-on spacer and too thick not to be unless you run Roundy-Round, 5/8" studs, imho...

The thinnest bolt-on spacer I found was something like 1.125" thick if I recall right??

Vette Brakes sells them, I think??

pdq67