Hank- I sent you a email.
Twisted- The material is 1/8 6061 on the plenum and runners. I think the 292 block will split before the intake does

Yes, this is the manifold we want to use for the turbo setup. We wanted to learn EFI before we turbo charged it. We thought it would make a little easy on the learning curve. Plus we installed a MSD Digtal 7 ignition to go with it.
Steven