I have been trying to buy this mini off a friend of mine for years ,, so anyway he asked me if I would fix it up instead , One of his kids ran it out of oil and stuck the piston in the orginal engine , I put a clone in it but not with out upgrading it a bit first , it now had a ARC rod , govenor removed , advanced timing by 4 degrees , 18 lbs springs on the valves along with a 22 mikuni and custom intake maifold ,, It turned out real nice aand runs even better ,, one of the nicest speedways I have seen in a while ,,,