The restoration of my 1975 Mack R685ST is not only a exciting adventure for me but also a daunting one, but by all means worth it. From the positive ground to negative ground conversion, to the truck not having a single functional wire, or the truck having no dash this gold bulldog will be back to work making money just like it was built to do. This topic is going to be about the cab/interior. The biggest part of the cab portion of the restoration is the missing dash. The man I purchased it from