new to MS
 

im doing a s4 to s5 swap and was wondering how complicated it is to wire up a MS vs doing the hack job of swapping wires between the series and which model of MS would be the best for the swap??

Wiring MS is no easier or harder than wiring any other EMS once you've modded the MS to handle the second trigger input and the spark outputs. Those mods are also not very hard.

I would use the V3 board as it's a bit more robust, and at this point, I'd use ms2 with ms2/extra 1.0.2 (2.0 will be out soon).

Ken