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.