[Prowbar]

Here are the modifications to the 305 manifold. I received the Mr. Gasket adapter. To clean up the gasket surfaces I fly cut them on the mill.

I then opened up the manifold to match the adapter opening. I also radiused the edges of the manifold where it transitions into the runners. It is easy to rough in with the carbide burr, then followed up by a shoeshine motion with a thin strip of sandpaper to dress the edges.

Both modifications should aid in flow tremendously.

As you can see I also installed the block-off plates for the heat riser. They are a light press fit.

Also got new 73 jets for the Holley from a local guy, he had a set of Holley jets. Said I could come back if I need another size.

I have plenty of hood clearance now, but I don't like the look of the stock Impco mixer filter. Toying with the idea to adapt a 1-inch or more dropped base air cleaner adapter on the mixer and use a 14x4 or 5-inch filter to correct the proportions.

The camshaft is on the way, hope to avoid any unnecessary customs intervention so I can install it ASAP.