Track bar bracket when re-using stock track bar versus ponying up for adjustable bar after lifting on JKs. I know Teraflex and EVO use that style. Bolts to lower control arm mount, bolts to factory track bar location, then also uses the ubolt that you see.
Like usual I'm late to the party. Carrier bearing isn't pressed far enough on front fridge shaft. Causing front shaft slip joint to be jammer in the trans. I've seen carriage bolts grade 5 in the past, can't remember where.
There is a slip yoke into the rear of the transmission and there also is a slip yoke on the front section of the shaft. The driveshaft should either have a fixed yoke at the transmission or a correct length shaft built with no slip yoke on it.
My gmc front driveshaft has the female slip joint at the trans side and male spines on rear of front shaft (to fit into front side of rear shaft). Rear driveshaft has female front end and u-joint at rear. Front shaft looks identical to yours except carrier bearing is up against the shield. Stock 91 gmc 2500.
Ram3500 transfer case failure that also took out the transmission too- They apparently ran over a semi tire in the road. It's kinda unusual for the front hubs to be locked in allowing the slip yoke to beat the crap out out of the frame.
This was in my buddies 1940 Chevy. Old school dual carbed 261 stove bolt straight 6, bored and stroked. He has a 3 on the tree and skinny maybe 225/75-15 street tires in the rear. The car still moved on its on power as the break was held together by the bearing. He shifts the car at 6,000 rpms and it broke between the 2-3 shift at a Beaver Springs Dragway. Only non repairable damage was the crank and bearing.