rear housing

Dave, im going to pass as the shipping makes it more costly then I am looking for. But again thanks for the offer.
Matts440 and others that have suggested a dana, I would love to go to a dana, however as I stated in an earlier post i already have 2 sets of gears already set up in separate center sections so I can change them when going racing or running on the street. With a dana I am limited to one set of gears or I would have to do setups all the time.
Heres a question, should I even concern myself with not narrowing an "A" body rear housing because they are so hard to find? After all should I ever want to go back to standard width I could narrrow a C body housing then.
Your thoughts
Rod