auto tag? WTF is that what I think it is? Umm... I don't put money in my car to play bumper cars on the highway. As for reporting modifications to insurance companies... if they dont ask, they dont need to know. When I totalled my 92 FHP mustang they weren't willing to pay a dime for the mods, had tires and wheels on there for 3 months paid over 2 grand for em, and they were offering me $1500 for the whole car. I gave them the tag and took the car. Fuck insurance companies lol. They can be helpful, but damn they try and screw you over in between the helpful times.