This is a nice clean fairly complete unit. It is designed to attach over factory knee pads. The switches move freely and the probe is very nice and complete. There are 1 of the 6 vents missing. The model number from Behr is 74 022 202. I don't know if it was manufactured in 1974. It came out of a California 1974 coupe. $450.00 Shipped US Cont 48. The item is located in San DiegoDSC_0530.jpgDSC_0534.jpgDSC_0529.jpg