Can i fit 4age 16v exhaust manifold to a 20v?

[ke25sr]

Can i fit 4age 16v exhaust manifold to a 20v?

About to do a new 2 1/4 mandrel bent system on the AW and have access to a set of 16V extractors.
(i can also supply these bends at good prices incl donuts pm for details)

So will they fit?

[flygt4]

pretty sure they are very different as any headers i've seen can only ever be used for one or the other.

[Mr Revhead]

well.....
to fit a 20v header to a 16v you slot the holes.....
so to fit a 16v header to a 20v, logic dictates you slot the other way....

but logic also says its not the best idea...
what 20v have you got?
i cant recall the size of the 16v exhaust ports off hand.
but the vlack top ports are the biggest of them all. so fitting a 16v header wouldnt be too flash....
cant remember if the ST ports are smaller than the 16v or not....

[ke25sr]

Its a B/T So its prob not a good idea.