Going to keep it short and sweet, I think im starting to get leaky water seals in my engine, but dont want to sell arm and a leg to do a rebuild. I want to know if I can use n.a. s5 engine block /keg (91 specifically) to swap it instead of my current s4 t2? will all my s4 turbo parts bolt on to the na s5 keg? like manifolds, turbo, transmission, flywheel, etc... Dont care about emissions crap. Also, because of high compression rotors will I need a stand alone or can I run my s4 rtek 1.8?

And yes I did do a quick search, so please keep it educational please!

 

Off the top of my head you need a manifold that will hook up to the 6 port engine(intake).
The rest of the drivetrain you can run from flywheel back..BUT the flywheel needs to be the same series of engine.
Block off the OMP and premix( taking out the electric OMP).

 

rtek1.8 does not change timing, not good to run with high comp rotors.