Fun Stuff, thanks for sharing.
I am partial to the Bullett Style wheels as well as the slant 6. I bet you would have as much fun with a properly built slant 6 and a 5 speed.
I would also Have to argue that the stock valve cover is a bit more useful for oil control on the breather and PCV valve than the non baffled Ebay unit.
I am biased of course.
Lots of nice work you have done there to a good chassis!