F20a to F22b swap?

[clarelude23]

Hi all. I'm just checking if anyone has some experience with this swap. I had a quick look and couldn't see much.
What I'm looking to do is swap in an F22b(dohc non vtec) into my bb9 which has the f20a.
Reason being is that I have the f22 just lying there and I wouldn't mind another small project.
Would there be any compatibility issues? I know most of the components are common. Anything I'm missing?

[wurlycorner]

I'd presume you will need to swap the ecu as well? And on a 5g the ecu is coded to the key??? (Immobiliser)
Would expect the exhaust header to be different too, but just guessing there really.

[clarelude23]

Thats cool. I had that in mind but luckily i got all of those. Just a matter of seeing what fits. Il post my results

[mercutio]

afaik the F20 F22 H23 manifolds are all interchangeable at least the 4g ones are

[Brozilla]

Intake manifolds, yes.

Header also fits with no modification, but downpipe from h23 needs to be cut shorter in order to fit on the rest of the exhaust.