74 Dart drive shaft help

I never even heard of anyone using a 2-piece driveshaft in a conventional drag car!

As you probably know, driveshaft angles are critical. As for u-joints, IMO Spicer solid u-joints are the best, 1350, as mentioned in the previous post. A forged or billet yoke on the rear end is also helpful. There are also different levels of tubing - mild steel, seamless & chrome-moly.