sswapp,
The nine inch seems to be plenty tough and there are LOTs of part available for it. The downside is that the wheel bolt pattern won't match the front on a Chevy pickemup. I put a '67 **** rear end under my '49 Chevy pickup for two reasons. 1. The wheel bolt pattern matches the Mopar front suspension and 2.) I already had the **** rear end that was the same width as the Chevy 12-bolt it replaced.
One other reason for the popularity may be because of the abiblity to quickly change gear ratios by just swapping the center section.
