Breck Myers Manifold Blueprint
I’m sorry but I quit making them a couple of years ago.
Here is the blue print for the manifolds if you want to have a local machine shop make them. The angled hole diameter is .120”-.125”.
No problem sharing it on your site. Yeah, the manifolds have been used on Australian Ford Escorts, to 911 Porsche race cars around the world, and some random mods here and there.
I sold about 500 sets before it cost too much to make them and sit on the inventory for too many months.