i have a standard cab 2000 chevy 3500. it is the older body style with the single headlight system. i want a king cab, but cant afford the payments. im poor ya-know. if i were to do a body swap, what are my options? it has the 8 ft bed. can i find a ext cab truck with a 6ft bed and have it work? or am i stuck. and its a 4x4