Tailshaft bushing removal/install

I picked up a tailshaft bushing removal tool.
Replaced the tailshaft bushing with a new bushing.
The old tailshaft bushing shows minimal wear and slip yoke also shows minimal wear.
I also checked the play between the slip yoke of the old tailshaft bushing and the new tailshaft bushing and there is no noticeable difference. Both have a little (same amount of) play.
Noticed the drive shaft is not original and the slip yoke was exposed for the first two inches when installed and the suspension fully loaded. I have read and am told by a driveline shop the recommended exposure should be about 1" to 1 1/4".
So decided to order up a longer driveshaft from Drivelines NW to get the recommended slip yoke position relative to the end of the transmission tailshaft. Not sure if it will fix the vibration problem but I am hopeful given all the info I have found.
The quotes for just going with all new driveline parts was not much more so decided to go with new u joints and a new slip yoke and have the whole unit high speed balanced.
Should have it back and on the car for a test drive this week.
Listen to my advice. Triple check the wear on the inside of both yokes where the u-joint C clips butt up against the inside of yokes. It doesn’t take a lot of wear where I’m referencing. The c clips leave grooves on this surface. It may look like minimal wear. But if both sides have grooves hardly noticeable. Its enough to cause problems because you have to figure if there’s minimal wear on both sides of yoke. That can add up to a 1-2 millimeters of wear. The smallest amount of groove from C clips will cause vibration. Look them over very closely.