Amtrak Metroliners Cars (The Budd Ones)

Not sure if this is the right section considering PC intially had them, but with the orginal Budd Metroliners what type of horns was used?

Also when Amtrak turned them all to cab cars did they change the style as I seen some where they had the white strobes and horns on top.

Sorry one last question, what type of trucks was used on these as well.

Thanks for your help.

The trucks appear to be the same buckeye casting trucks used under Metra H-1 Highliners, probably with different motors as the H1's are only rated for 75mph and I've never been that fast in one.

I think after the bankruptcy, Buckeye is now General Steel Casting.