Im 15 yrs old and restoring an 1941 AC C for an FFA competition. First of all I would like to know what the difference between a distulate tractor and a full gas tractor? Is it the head? Also if anyone has a block or camshaft for a C in the Michigan/Indiana area I would be interested. Does anyone know of a overbore and high compression overhaul kit? Sorry about all the questions! Any help or any information about a C would be appreciated!