Bill,

They're the ones! They are the original type in the original position. Even tho I've seen trucks with Air Brakes and no Air Horns, I believe all Road Tractors had Air Horns as standard equipment. It's just about a guarantee that they are factory original.

Thanks for the pictures.

Bill


'60-'72 Chev/GMC Fan
GMC 9500 Fan
Detroit Diesel Fan