I still drive my truck on the street so I do not want to use a spool but I would like to upgrade my axles and carrier. What axles are a good direct replacement? SCS? Also what about a carrier, trutrac? detroit locker?? I personally had good luck before with my half ton with a turbo on it with the trutrac but thats a shadow of what Im doing with my duramax. Our tracks are not super tight up here but I just would like to have my ducks in a row prior to a failure. What is everyones opinion?