i am ordering a TKO 600, the corresponding bell housing, clutch, aluminum drive shaft, and yoke.... i have talked to 4 different sales persons from different companies about the order. 2 of them told me i will have to shave down the drive shaft for it to fit. and the other 2, told me i will have to get a driveshaft spacer for it to work. Please someone that has done this before, tell me what is correct. thanks!!