Re: Intake/Exhaust Manifold lug thickness
Judgement on the tightness, but check for a few heat cycles to snug the nuts down.
You are correct that the last bolts tightened are the 2 that bolt the 2 manifolds together.
Careful not to strip, or snap those small bolts. Probably would not hurt to chase the threads first on the exhaust manifold.
Bob
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