We did a couple in my buddy's home shop many years ago with a small metal band saw and a stick welder, cutting the factory weld with a hack saw.

Scribe a line on the shaft and yoke and you can get it back in the right position.

Biggest problem we ran into was that some shafts had an inner tube that was a real PITA to cut down.

Never had one break, and one was in a pig block 4 speed car.

We did them ourselves mainly because there wasn't a driveline shop within 50 miles of us.