Came across this craigslist ad for an '85 F350:
http://losangeles.craigslist.org/wst/cto/4687081830.html
The truck itself looks nice, but look at what it is being used for! There is no way a F350 of that era should be towing a 48' race car hauler. I bet that trailer itself empty is about max towing capacity for that truck. Even though a 6.9l is capable of towing a lot more than it's rated for, that doesn't mean it's a good idea, and this looks like a big safety hazard.
http://losangeles.craigslist.org/wst/cto/4687081830.html
The truck itself looks nice, but look at what it is being used for! There is no way a F350 of that era should be towing a 48' race car hauler. I bet that trailer itself empty is about max towing capacity for that truck. Even though a 6.9l is capable of towing a lot more than it's rated for, that doesn't mean it's a good idea, and this looks like a big safety hazard.