doing it and getting away with it and doing it right are 2 diff things.

the yokes have to be phased

the end welds need milled not cut with a hacksaw

needs a dail indicator to make sure it straight on the run out

yes you could be close to the balance it once had,but it has now changed with the cut and reweld bead

all this will make the u-joint have a longer service life,and stay in the car at high speeds

I have hacked shafts up and even welded u-joint caps into yokes after grinding the yokes to get them to angle more with out binding on a lot of 4x4 junk.

after throwing one at 105 mph on I-75 in a 73 duster, i wont ever skimp on a shaft again.

not saying you cant do it and get away with it..but it can bite back at ya