Eh I’d say mostly Chrysler. Ford’s classic truck line were some of the best trucks money could buy from 1964 till 1996. The Windsor family engines were fantastic and the Mod motors aren’t bad either.
But even Chrysler has had its standout stars. Despite its awful beginnings in 2003 the modern Hemi has really evolved into a fantastic V8 powerplant. It’s just sad that it took Chrysler so long to make that engine reliable.