[I'm tryin]

ONe thing is for sure! You have to make sure you know the exact position of the distributor BEFORE you remove it. Mark it with something you can easilly see using the vacuum diafram as a point of reference. There is one bolt that holds the distributor in place. It's just below the distributor going toward the front of the van. POsition is the key. Otherwise, you'll have to go through finding top-dead-center of the #1 cylinder to re-establish firing order. kBe sure to also to mark the position of the rotor and match it up on the new distributor.