Freds Garage,
that manifold that Tom posted looks to be a worse choice over the SPA turbo,does not look like it would even be close to fitting in an early Nova.
Might be able to install the standard SPA manifold & make an adaptor to position the turbo where you want it.
Then you can make the transition from a 4 bolt flange to your 3 bolt flange.
Just a thought.
You say you have a Buick GN turbo?
That has a three bolt turbine flange that would require a different mount or use an adaptor that is 4 bolt to 3 bolt flange.
Also the 3 bolt turbine housing does not flow as good as a T3 or T4 turbo,but it will work fine up to a certain HP level.
Just something to think about,if need be.
MBHD
