I've had to use one on one of our cars (think it was the challenger) and it went on no problems. Make sure that the paint on the coil (if you repainted it) has dried long enough to let all of the outgassing from the paint expel. Otherwise you could run into problems with the transfer sticking. I have personally not had that happen but have read on other threads about that happening. So far I have yet to have any problems with any of the transfers that ECS sells.