Founda great deal on a n/a S5 engine, and I was going to get a new engine anyways for my 88 Vert N/A. Do yout hink it will be the hassle of finding the ecu and wiring harness to swap it out?

 

I would just drop it in and run premix. Then add on a little rpm board to activate the VID and six ports.



Just a thought. Some stuff will not just plug in, like part of the old harness (s4) into the s5 ecu.



C

 

Just use the short block. Put all of your S4 stuff on, including the front cover/OMP and enjoy.

 

This is the only problem other than the front cover/OMP issue when using S4 parts to make a S5 short block long:

 

good point...