I got a CR 265/5, which came out of an Euro E30 M3, for free from a friend. My car is '72 2002 with 2xSolex C40, 4-speed and LSD. I will do some Hillclimbing and Autocross events this year. I 'd like to use this 265/5CR g.box, I know all those cutting and welding problems, I'm ready for them. Do you think it'll make a positive difference on the performance of the car? Will I going to have better gearing? Your ideas please? Thanks.