i'm with greg on this one.

one reason i try to get an annual is if there has been substantial things done to the car to make sure it is alright.

i don't want to get to the track and find out they don't like my door bars or fuel cell install, etc. this to me is the biggest driver for getting an annual tech at a non racing tech event. it also is in an easier, smoother atmosphere when you get to discuss things with tech and get advice.