Odd 8 1/4 Question

I have a sure grip 8 1/4 rear that I want to put on my 65 Dart, but I am not ready to switch to LBP yet because I have a nice set of rallies with new rubber and I don't have to funds for new wheels and tires. My question is can I remove the SBP hubs and drums from my 7 1/4 and put them on the 8 1/4? Is this difficult? Am I crazy? Any other issues I may run into?
Thanks
Joel

Sorry realized what I was asking was the wrong question. Is there a way to change an 8 1/4 to SBP? Should I just get the hubs drilled? Is it possible?