Another small block turbo early valiant

V8-valiant said

my worry about that is having one side with a 3” outlet and the other a little choked down from a manifold with a 2” outlet. Anyone have opinions on this?

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Yep. First turbo I did had manifolds. And the turbo sat right on top of the passenger side manifold.

It was a night mare because half the engine sent no exhaust to the turbo, and the other side fed the turbo.

It sucked. You couldn't get it happy, as the engine saw the same boost while the exhaust was different bank to bank.

I think any discrepancies between banks is not good. An inch difference in outlets is a big deal.

My bet is you'll have to fab your own exhaust. Those early A's (as you well know) are very tight.