Just a suggestion...most commercial auto air suppliers carry all the necessary components to hang an under-dash unit in a pickup for less than 50% of what you'll lay out for a "kit". Mine even crimped my hoses after I mocked up the install.
The biggest problem I encountered with my install in my "other" truck....was getting the bracketry and belt alignment worked out. Granted, it took a little extra digging to get it the way I wanted it but isn't that why we work on these old trucks?
