Build Julian's 1989 FJ62 Build

[julianramirez1005]

My biggest fear was realized when I got up to highway speeds for the first time. Lots of not so good noises. I'm thinking its driveshaft related or maybe bad pinion bearings and also torque converter issues (I did drop the torque converter about 4ft onto concrete when i had engine out) Driveshaft is probably completely out of balance, haven't got it balanced yet.
Symptoms:

1. Metal Howling noise under load at speeds greater than 45mph. Seems to come from trans tunnel When I let off gas it subsides.
2. When I touch the gas at 30-40mph+ I can hear a clunk/click grinding noise that engages every time I tap the gas while cruising.
3. I slight vibration when coming to a stop. A kind of consistent low vibration that shakes the steering wheel when coming to a stop even if i let off brakes it stays consistent until I come a stop.
4. clunky shifts, but i think this is just a bad cable adjustment ive been fiddling with it trying to find the sweet spot.

So, I have a DS that came with my rig that is a sixteen-spline double cardan, but it didn't come with a slip yoke. I'm hoping this will solve some of these issues but i need to find a yoke that will fit it and i have no knowledge of where it came from. Any recommendations on this?