I recently bought a 1975 CB 750. It´s my first time restoring one of these, and I am having trouble with the whole F, K, and Super Sport model distinctions. What´s the difference? I´m trying to figure out exactly what it is I have. The guy I bought it from said it´s a Super Sport. Is that the same engine as the K and F? Can I buy a gasket set for either bike? Seems like a stupid question, I know, but I can´t seem to find much info on this.