I've got a set of heads that my uncle gave me. Said they were used on a 350 motor setup that was running about 400 ponies. I dont' know dingle berrys about heads, other than how they work. But how do I know what kind, size, valves and all that jazz. I seem to remember him saying that they are 194/202 heads. I am assumng this has something to do with the valve sizes. Can someone shed some light over here????? Don't you buy no ugly truck!