165 v 205 Exhaust Manifold

Top view. The 205 manifold is a little larger Ports are a different size and shape

Note the 165 has 6 studs, the 205 has 8

A 205 exhaust manifold gasket offered up to a 165 exhaust manifold, the differences are obvious The exit from the manifold/entry to turbo is considerably different. The 205 has the twin exit design which allegedly improves turbo spool up time