Mark,
If you are going to the adjustable cam timing route, you need to look at the ends of the cam where the gear would index. If it is not the same size as the area where you are going to machine for a keyway, then you need to weld the ends of the cam and re-machine them to correctly index on the cam gear.
You can leave the snout on the end of the cam and use a p/steering block off plate, but if you use an engine oil cooler you can't go this route. If you use the engine oil cooler, then cut the end off the cam and use the proper freeze type plug for the cam housing. Freeze plug 3.0 liter and later factory part.
The seal does not press into the housing since it is 49mm and the seal is 47mm. I have seen an adapter used there but I don't know who fabricated it.
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