I have just posted 2 pics of the air horn position on the remains of a '63 Chev.'80 series tractor. The two trumpets have been removed some time back, only the base remains. The '62 tractor has the same base placement. I regret that the pics are dark and difficult to see due to the overcast and rain, but hope it helps with your plans.
I plan to post many early truck pictures of our company within the next 3 weeks, included will be numerous pics of task force tandem dumps, both Chevy and GMC, a few pics of a 1958 Chev. 90 series LCF tandem axle tractor and many Chevrolets of the 1960 thru '66 era. Lots of air horns!
The air horn pictures are located in my webshots album under 'odds & ends' Hope this helps.
James
