That always sucks..
Only discovered my YJ had a slip yoke arrangement after I bought it and I was not happy about it.
After I put a 2.5" lift on mine, then couldn't drive more than 40mph without sounding like I was stuffing it in reverse.
Probably could have taken the shims off the lift springs and gotten away with it, but the shaft would have to be lengthened.
3 years later I finally got access to a lift and got the SYE installed with new CV driveshafts, smooth as silk.
Hat's off to Tom Woods Custom!
If you're running a lunchbox locker in your front 30, spend the extra $ and do both shafts.