OEM 12-bolt or new 9-inch?

[AALynch]

Hey guys,

I'm getting closer to ordering a 4-link set up for the rear of my 69 Camaro, and will likely be mini-tubbing at the same time...I've got an original 1969 12-bolt currently in the car, 1k miles on it, with 4.10's and a Tru-Trac. Is there any reason I NEED to upgrade to a 9-inch rather than getting new axles and C-clip eliminators for this 12-bolt and using it? It would certainly save some money, but I don't want to put money into the 12-bolt if a 9-inch is the way to go...

Thanks again!
-Adam