I ordered a rear spoiler for my 77 Vette, had it painted and a professional body shop install it. The way it is built, they mount the bolts in the spoiler so you can not test fit it unless you drill into the deck of the car. When the shop did this the spoiler did not fit correct, the body shop is having to do extra work to make it look correct. When I contacted Corvette Mods they said send it back, I cant send it back, I have drilled holes in the deck of my car, they said they couldn't do anything. Stay away from this company, they DO NOT stand behind their product.... You've been warned....