DennyW's right in that a driveshaft loop is not required for street use.

Running with or without a locker, a light car even with some reasonable to serious horsepower is going to spin the tires before it breaks anything.

My 32 has a little over 520# torque and around 400 HP.
It runs a Ford 9" rear end with 28 spline axles, 3.70 gears and 30 1/2" tall x 8" wide tires that are fairly soft.
Has an open differential as well.
It launches pretty good all things considered.

HD U-joints are in use both ends.