Slant six cam

Are you doing a full overhaul or just putting in the cam?

For just the cam:
- Timing cover gasket set
- Timing chain set
- Oil pan gasket set if you have to pull the pan (you don't if you work it right)
- Oil pump gasket
- Fuel pump gasket
- Valve cover gasket
- Water pump gasket
- Black RTV
- Head gasket if the lifters can't come up through the head pushrod area (job gets a lot bigger).
- I'd put in a new oil pump while you are there.
- Interesting article: http://www.slantsix.org/articles/in-car-camshaft/install-review.htm

Pulling the lifters can be a challenge if varnish has built up on the lifter bodies.

That Howard cam has 4 degrees advance ground in.... good for a driver.