Installation doesn’t require disassembly of the driveshaft. The 2-part design clamps around the OEM bearing. The old carrier must be removed, so a cutting tool is required. There are 2 ways to bolt up the new carrier:
Illustrated using the left bolt below in the picture below, Option A is the only way to install the carrier using the OEM tunnel brace. You first clamp the carrier around the driveshaft, then a nut and bolt hold the carrier to the OEM brace. Access for the nut is tight, so the front of the driveshaft must be lowered to get a wrench on the nut. Once tight, the entire assembly is bolted up to the body. For a first-timer, installation will be about 1.5-2 hrs.
Illustrated using the right bolt below, Option B makes use of a custom tunnel brace to make installation faster and easier. The bottom half of the carrier can be bolted to the new tunnel brace while off the car, then special holes in the brace allow you to bolt the two halves together at the very end. This method doesn’t require lowering the front of the driveshaft. For a first-timer, installation will be about an hour.