ok.. i'm about to buy an s5 engine for my s4

will there be any trouble or problems with fitting an s5 engine and tranny in my s4?

thank you so much for any help

 

Fitting issues....not that im aware of, but you will have to swap out yoru s4 ecu for the s5...which means you may have to add more things. The best idea is to just put all the s4 manifolds and stuff on the s5 block...and you now have an electric OMP instead of mechanical, so im not certain if that needs to have a wiring harness thing or not..