I was reading the archives about the Powertrax locking differential. I've got a '61 Falcon with a hopped up 302, T-5Z and 8" with 3.50 gears. It's strictly a street machine, but I like to launch hard and generally hot rod aroundI've got an open rear end and definitely want to get some sort of Trac-loc type device. I'm looking into the Powertrax. Does anyone have one in their car, and would they recommend it for a street driven car? Pros and cons and all that? Thanks.