367 Lockers, Gears & Rebuild Kits Detroit Lockers Nothing is as dependable, bullet proof & perfect for autocross & road courses as Locker with the right spring rate. Only a locker is 50/50 under power & 100/0 when turning. That is optimum.  DET #187SL17B 9” Ford 31 Spline Locker $549.99 DET #187C145A 8.8” Ford 31 Spline Locker $639.99 DET #187C197A GM 12-Bolt 30-SP 3.90- Locker $649.99 Ring & Pinion Install & Master Overhaul Kits I use & recommend the master rear end overhaul kits from Yukon Gear. You pay a little more but every part & piece is top notch, compared to many kits that cut corners. We only use Timken bearings in the rear end overhaul kits. The kits with SPC in the part # utilize a crush sleeve eliminator to maintain optimum pinion bearing preload. YKN #YKF8.8-A Ford 8.8” 2009 & Older $169.79 YKN #YKF9-C Ford 9” 31-SP / Regular PS $204.24 YKN #YKF9-C-SPC Ford 9” 31-SP / Regular PS $214.07 YKN #YKF9-HDC Ford 9” 31-SP / Daytona PS $230-65 YKN #YKF9-HDC-SPC Ford 9” 31-SP / Daytona PS $240.46 YKN #YKGM12P GM 12-Bolt Passenger Car $185.79 YKN #YKGM8.2 GM 10-Bolt Car ’64-’72 $198.62 YKN #YKGM8.5 GM 10-Bolt Car ’70-‘81 $176.20 Ring & Pinion Gear Sets FRD #M4209-88373 Ford 8.8” OEM 3.73 $172.99 FRD #M4209-88410 Ford 8.8” OEM 4.10 $172.99 MOT #F888355 Ford 8.8” Motive 3.55 $223.26 MOT #F888390 Ford 8.8” Motive 3.90 $262.40 MOT #F888456 Ford 8.8” Motive 4.56 $230.77 MOT #F890325 Ford 9” Motive 3.25 $262.40 MOT #F890350 Ford 9” Motive 3.50 $203.94 MOT #F890370 Ford 9” Motive 3.70 $241.51 MOT #F890411 Ford 9” Motive 4.11 $237.74 MOT #F890430 Ford 9” Motive 4.30 $246.62 MOT #F890457 Ford 9” Motive 4.57 $214.67 MOT #G888355 GM 12-Bolt Car 3.55 $241.51 MOT #G888373 GM 12-Bolt Car 3.73 $199.64 MOT #G888390 GM 12-Bolt Car 3.90 $241.51 MOT #G888410 GM 12-Bolt Car 4.10 $193.20 MOT #G888430 GM 12-Bolt Car 4.30 $253.07 MOT #G882355 GM 10-Bolt 8.2” 3.55 $268.35 MOT #G882411 GM 10-Bolt 8.2” 4.11 $182.47 MOT #G882456 GM 10-Bolt 8.2” 4.56 $227.58 MOT #G885373 GM 10-Bolt 8.5” 3.73 $214.67 MOT #G885410 GM 10-Bolt 8.5” 4.10 $210.38 MOT #G885456 GM 10-Bolt 8.5” 4.56 $214.67 Drivetrain