The guys at HOT ROD Garage’s are finishing the MSD Atomic Surf Van in episode 21 and 22. If you haven’t been following the series the guys are swapping a 630 horsepower Lingenfelter LS7, Gearstar 4L80E automatic transmission and Moser 12 bolt Chevy rear end into a 1973 Chevy Van. In the end of episode 22 the van goes to the drag strip to test how all this work turned out.
If you are interested in a custom rear axle or driveshaft, David does a good job explaining everything in this episode.
Source: Roadkill Youtube channel