Advice Pleas on rear end.

Yes it has the 7.25 in it now. Sorry forgot to say that i replaced the U joints as well. I was hoping that was what was wrong but no luck for me :)...

Sorry for all the questions but what is (SBP and LBP)?

Also if i go with 8.75 will i have to cut it down or do any major mods to it?

Thanks again for you help and info.