How hard is it to replace the rear deck filler panel on a 66 Lemans. I am in the process of tearing mine down and I remove the back glass today and got a suprise. The filler panel is rotted out along the lower window frame. Is this panel just tack welded in?. I plan on finishing tearing the car down and put it on a rotisserie and then sand blasting.Hopefully I wont get to many suprises.