Up for sale is a custom C6 hitch which will work with NPP exhaust. I paid $270 to have it fabricated at RPM in Scottsdale. The design specs are from a forum member who is an engineer. This hitch worked flawlessly for me and is great for NPP exhaust. Very solid build! I sold the car and have the trailer up fro sale too in a different post. Willing to sell them separately or together. Below are the pictures and the link to the thread from the member I copied the design from.

https://www.corvetteforum.com/forums...n-details.html

not sure, the dimensions are in the thread I put in the ad.