changeover

I have the following parts (1) Starter (2) fuse Panel (3) cooling tin with fuse panel Cover (4) Blower Housing (5) starter switch (6) starter button (7) Flywheel with ring gear "Non Charge Type, Sorry" These parts are from a H70 but I'm Pretty sure they will fit H50-H70 But please double check...

I just picked up a 5hp. briggs that is run alcohol.It runs awsome,but alcohol and changing oil all the time sucks.It is on a racing go cart.My question is,can I put the old small jet in it instead of alcohol jet in the carb,and then run good gas?Or is there more to it then that?Any help would be...