I just set up my trailer for towing the Viper. I use the tow hooks (eyes actually) from ipsco.org
These are by far the strongest and most secure units I've found for the Viper....but they are also probably the heaviest.
I used two hooks (many use only one) so I can bridle the car and pull from both the hooks. I bought both the long and short tow eyes and ended up with the short ones since they don't stick out past the nose of the car but are still easy enough to use.
The system clamps to the heavy duty round cross bar between the frame rails and the "tow hooks" are removeable with one bolt. Fit, finish and customer service were excellent.
They also have a rear tow eye that installs easily, again I installed two mainly for track days tow points. But, on the Viper, the rear D frame holes are perfect for any hook nose strap to insert into if you are strapping the car down in the trailer for towing.
Haven't done a tow hook for a Vette, so I don't have any advice for you on that one. Enjoy the trailer, now that I have one I don't know how I lived without it.
Cheers,
George
