Just a heads-up, going off of the info from a previous post by another Mopart's member, I purchased Spicer u-joints and strap kits for my 7290 driveshaft and yoke.

Neither strap kit 2-70-28x nor 2-70-38x work. The straps are made for the 1310 and 1330 diameter u-joint cap (1.062"). The only thing I found useable out of either kit were the 4 bolts out of the '38x kit (1/4-28 by .625"L).

...so onto Marsh Performance's website I did go to order up the Mopar Performance P4120469 "7290" strap kits.