If I swap my stock posi unit for a spool, will that strengthen my rear any? Also, when people say that spools are not streetable, do they mean that it's impossible or unsafe to drive, or just extremely uncomfortable?

 

didnt know anyone made a spool for a 10 bolt. anyways, spools used in daily drivers put lots of stress on rear components when turning, and usually one tire will always be squeeling around a corner.