I' m new in Mini world , and i try to find best solution for MINI R50 hillclimb preparation . I read that MIDLAND 5 Gear are not the best and some of drivers have changed MIDLAND gearbox to GETRAG . 1/ GETRAG 5 gear are more robust with the same ratio of gear. same weight 2/ GETRAG 6 gear are more robust with short ratio of gear .but more heavy (but +32 lbs) 3/ I dont know if it is possible to use GETRAG 5 with short ratio ??? For GETRAG 6 , do we need to change transmissions ? Thank you in advance for your feed back .