Quote Originally Posted by ralmo94 View Post
If you are running an L31 van file no need. That's why the 0411 swap is so popular, because in stock form they still used the 4x crank trigger and a distributor.

Personally the only changes I would make to a stock file before initial start up would be disable VATS. That should be all you need to fire it up.
0411 and P59 both used 4x crank and a distributor. The 4.3L were setup with a 3x and distributor and offered with both PCMs as well.