FL-50, FL-70, FL-80
Online forums are an excellent resource where you can ask specific questions of those who have owned and/or operated the Freightliner fl60. Finding a website, like this one, http://www.commercialtrucktrader.com/Custom-Search/search-results?make=FREIGHTLINER%7C2310628&model=Fl60%7C764865818&sort=year:desc where fl60's are being sold is also a good lead to more information as you can contact the seller and ask questions.
A 2002 FL60 Freightliner will run you around $15,000-45000 depending on the condition and mileage. You can search for available ones in your area at http://www.truckpaper.com/list/list.aspx?ETID=1&catid=27&Manu=FREIGHTLINER&Mdltxt=FL60&mdlx=exact&bcatid=27
No
No
No
82-87
Due to their differing front clips they would not be interchangeable.
No. All Peterbilt models have different-shaped hoods.
I believe it starts about the year 1976 through 1987 are all interchangeable.
No, 97 to 99 are same. New body in 2000. Only 2000 or 2001 are interchangeable.
Yes. The pre- and post-facelift hoods remained unchanged. If you put a post-facelift front end on a pre-facelift vehicle or vice versa, you don't have to change the hood.
Freightliner manufactures most of heir own products. Freightliner is owned by Daimler A.G.