Just saw this & assume you have found your answer, but if not...the answer to your question is Yes, however the ideal way is to have the rear built with GM ends. They have the GM bolt pattern (same as your '70's Camaro) but with the Ford big bearing size bore. You get the axle set-out made to GM spec (1/4" more than the Ford) when you order the axles & it all goes together.
Im not sure Currie makes them though. The nicest ones Ive used come from Chris Alston Chassisworks & Moser.
https://www.summitracing.com/parts/msr-7900?rrec=true Unlike the ones made by Strange (& others) the Alston/Moser ones have the bore for the correct seal when using the ball bearing.
If you have someone local with an alignment bar, you could likely have this done for about the same amount as a new brake set-up. Since you have the axles already, you could just use a 1/4" spacer between the axle & rotor to "fix" the difference in the set-out amount.
Lorne