Just wandering if anyone has pics or measurements of the bolt spacings on the exhaust side of the SR20 head or exhaust manifold. Just trying to see the different between the CA18 and SR20 exhausts. I currently have a CA18DE set up so just the SR20 info please. CHEERS.

Totally different. Don't bother buying an SR20 manifold and try to mate it to a CA18 head.

Not worth it.

Thankyou oh wise one, I am thinking on making my own extractors to suit my CA18DE as its dam hard to find any off the shelf items, back to the drawing board.

As an example, look at the SR20 turbo manifolds and compare them to the CA18 turbo manifolds that are on ebay. In case you need more encouragement to forget.

The stock CA18DE manifold is good, and does fit in a 1200 engine bay. Not really worth modifying.

much difference comparing the FWD to the RWD CAde ex mani's. i have an exa one on my CAde (for sedan) are the rwd much better? Heath

I would expect a major difference in design.

The ca18DE RWD is a 4-2-1 extractor type header. The flange is a 2x1,3/4 inch pipes. So you need to get both the manifold and front pipe when getting the engine.

The FWD DE ones, like most FWD manifolds, they aim to send the pipes under the engine at the first opportunity. The RWD one is a more free flowing and appropriate for a RWD application.

Best photo I can do:
My original CA18DE install back in the day..scan/photo quality shows it was a while ago