454cid
Sooper Pooper
It's an AAM driveshaft, but I think (not sure) that AAM [sometimes] or GM(?) used Spicer slip yokes and stub shafts on its driveshafts.
You must be registered for see images attach
Oh, I thought it was a Dana/spicer since I saw that's who made that rubber piece earlier in the thread and the other sticker looked foreign to me. The only time I've seen AAM use Dana parts was for the first Jeep Rubicon. Maybe they did it for some of the GMT-400 stuff, too.... I only caught the tail end of the GMT-400 program.