@glenna052yahoo-com We did not know that your truck was being built with modernized driveline. Some of our advice, given above , will be of little use. The shop manual and parts book will not yield much useful information for you.

Mike

@35mike I don't mean to hijack this thread, but I have a quick question - do you have the T&C horns in your 39?

@ralph-l-lankford I have set of add-on horns somewhere. They are trumpets on a bracket that would mount to the brace rod.  I have never had a vehicle with them installed.

Mike

Okay - thanks! I'm trying to get the measurements of the support bracket from the horns to the firewall. From memory it's about 11" long and about 3/4" wide on about 1/8" stock.