[Rev]

I've rplaced alot of u-joints. I've never needed to rebalance a drive shaft unless it was a graft from one front to a different rear requiring a cut and weld job. Then a rebalance is mandatory.

Just replacing the same u-joints is relatively easy. Just remove the drive shaft as detailed earlier, and replace the parts. Careful with the roller bearings so as not to lose any and all will go without trouble.

Unless you have high horse power, then use grease fitting u-joints for longevity. Very high horse power requires u-joints without the fittings which weaken the parts somewhat.

Rev