thanks guys. My Haynes manual told me how to read the vin but it didn't tell me what the codes meant. I have a buyer interestedin my truck but he only wanted either a cleveland or a modified, not a windsor.
Another easy way to tell is the Winsor has the head bolts BELOW the exh. manifolds,and the thermostat bolts to the Front of the intake manifold.
The Cleveland and Modified head bolts are ABOVE the exh. manifold and the thermostat is on top of the block.