We found a metal pipe that was just the right diameter to fit the outside of the oil seal. We used this to apply equal pressure around the seal so that it would go into the timing cover evenly, and tapped it in with a hammer.

Once the seal was in place, we installed the timing cover gasket. This gasket must seal against both oil and water, so we were careful to use a good sealant on both sides of the gasket.

3M's weather strip adhesive was recommended by one of my engine building books since it resists high temperatures and holds up well against oil and solvents.

After attaching the timing cover (with gasket) loosely to the block, we installed the dampener, using it to properly line up the timing cover oil seal. On the recommendation of another Andy, another JBL Cobra builder, I had purchased a dampener installation tool from Jeg's. This worked like a champ, although it did required quite a bit of muscle.

Once the dampener was installed, we tightened up the timing cover bolts and added the rest of the bolts that weren't shared with the water pump.

Next came the water pump installation. To make sure we wouldn't have any leaks, we first removed the rear cover plate on the pump and reinstalled it using gasket sealer.

  
The pump installed relatively easily, although the ARP engine bolt kit that was supposed to include all the bolts necessary to install the timing cover and water pump didn't have the correct length bolts. Fortunately, we had a collection of grade 8 bolts and we were able to find most of the bolts we need. We still need to find one long bolt - the one included in the ARP set is about 1/4" too long. We may have to resort to cutting the bolt we have.