after checking with many sources locally & online, where not too many people are not skilled to weld pot metal or do the machining work like this (attached pics)
sent this
rare 1973 super duty carb 7043273 air horn for repair work to
Jeff / Shaker455 in new hampshire
he drilled & tapped using small precision allen set screws to solidly hold the air horn from the bottom side to the acc.pump arm holder
looking from top cannot see any repair work has been performed
excellent job.
thanks again.
__________________
someone who thinks logically is a nice contrast to the real world.
http://www.youtube.com/watch?v=3FfKVVZW1-Y