Hello - First time post. I have a 1967 LeMans that has been a drag car since the mid 80's. I want to make a prostreet car out of it so I am making the transition. It currently has a Dana 60 with a spool and 4:88 pro gear. It seems like there are many options for a posi rear end and I don't know where to start. Here are the specs on the car - 1967 LeMans, 502" BBC (600ish hp), TH400, Narrowed Dana 60, 31X16.5 M/T tires. I would appreciate any suggestions for a posi carrier for my Dana 60. Also, suggestions for a gear would be great too. This will be a car that mostly goes to shows with the occasional 1/8mi full throttle release of aggression . Thank you.