do 200 and aussie 250 2v have the same exhaust manifold?

I think the headers are the same so the mainfold should fit as well.
 
No. The 2V came factory fitted with headers only (ARD10E-9430-S, I think). The cast fanimold will leak out the top unless you weld the upper 3/8" of the centre ports closed.

Adam.
 
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