Originally Posted by Hulk
Extended the back drive shaft but no double cardan CV needed. No grinding on the front shaft needed.
If you didn't rotate your pinion up to point at your TC and you are happy with the driveline angle (a little vibration), then no double cardan is needed.
If you did rotate the pinion up you can get by without a double cardan CV if you dont mind driveline vibration and reduced U joint life.
As far as the front yoke that depends on what year rig your driveshaft is out of. The older ones require minor grinding in the valleys to have enough clearance to not bind at full droop if the other wheel is stuffed.
If you never wheel your rig hard enough to cause that condition then it's probably not a concern.