trying to build my kids a semi offroad kart. I have been looking at comet 30 series converters, just unsure what is going to fit my app. I have a 06 model 11 hp briggs on a 2 seater little fox buggy. The engine has a 3 1/2 bolt pattern, but I can't find any specs on the back plate to see if it will mount on my engine without any mods. I'm also running a 60t sprocket with 19" tires. I spent hours looking though different sites and forums before I found you guys, but I have found nothing about this. Can anyone help with my problems. Any advise is welcomed good or bad!!!!!!!!