I'm in need of some lower gears, mainly because of going turbo next year and something better than 2750 rpm at 70mph. I can get a complete 373 rear for 50 bucks. Question is would it be cheaper to have a shop put in the new gears in my existing rear or buy the rear, rebuild it myself and have the shop just swap the rear? I would just do the gears myself but it will be my daily driver and I don't have a garage to do it in this freezing weather.