of course if you want to blast around and up frasers etc in a tuned up 600 at some point the weak drive shafts are going to give up, i went through a few of these cast drive cups before I got fed up changing them. so here is what a friend and I came up with, half fiat, half daihatsu, easy enough to make, I pre fabricated it all and just got a machine shop to weld and machine for me, the drive shafts are cut, machined down, then a tube is pressed on, 3 slots are then cut into the tube and into the shafts, these are then filled with weld, then the whole lot is turned on a lathe to the exac
t dimension of the oil seal boot to slip over. the drive end is made of fiat and diahatsu parts, with a custom collar fitted to join it all up. result is a super strong drive shaft that can be easily removed, and is 'fit and forget' with its tri-poid drive bathed in u/j grease.