For this project (I assume you want Donkey Kong Country), I recommend getting an NSS PCB, which is wired for Jamma, plus a DogP cart converter. The kick harness covers the rest of the buttons on the SNES controller. I believe Tony Swann has the tech to get the SNES controllers working on a Jamma Cab, or you could try to source expensive/fat NSS controllers. Yes, this option is pricey...but will give you the real deal feel.
Another cheaper option is to use a JAMMA hacked SNES - user
@Lemony Vengeance made me one years back and it worked amazingly well in my Capcom fighter cabinet. He used a CPS2 style kick harness connector and I got to determine the button layout (Jab-Strong-Fierce-Short-Forward-Roundhouse to A-B-X-Y-R-L, for example)