as i picked up in alot of the litrature on the net there is a distinctive difference in the front and rear drive shafts. there is a flat section on the ball side and i believe this is the shaft intended for the front(please correct me if wrong)

am i correct in saying the front and rear drive shafts are of different lengths as i have noticed with alot of droop setting the 3mm pins are on the edge and actually stick out of the cups on the front drive. i was looking to see if the rear are slightly longer would they work in this location on the front. i was looking for a way of ensuring the shaft does not pop out under extreme riding.

i have also witnessed the front hingepins break in the middle on my friends The Cari noticed whilst building a The Car the holes in the front A arms are not ligned up 100% and the pin actually bends ever so slightly in order to make it through the A arm. I have reamed the holes out to try and align the pin and ensure it moves freely as i was wondering if this addred stress to the already hard metal could cause the premature break of the hinge pins.

please advise any advice you can.

regards

Yes the front driveshafts are shorter. And they are shorter for a reason. You can fit the rear driveshafts on the front, but they will bend rather easily.