Noise on Deceleration After Re-Gear

16473840097092920384418029158377.jpg
 
Vibes at 65 can be tires so there's that. Your front driveshaft angle looks not good, because that's a DC at the transfer case the pinion should be aligned with the driveshaft. Pulling the shaft is normally the way to narrow this down. Personally I'd rotate the tires and check tire pressures as a first step. Loose control arms in the front will allow things to shake pretty easy.
 
Vibes at 65 can be tires so there's that. Your front driveshaft angle looks not good, because that's a DC at the transfer case the pinion should be aligned with the driveshaft. Pulling the shaft is normally the way to narrow this down. Personally I'd rotate the tires and check tire pressures as a first step. Loose control arms in the front will allow things to shake pretty easy.
What is a DC ?