I'm doing serious bodywork on one of my FC's with will involve cutting out the driver's rear quarter panel and replacing it, so i need to know where all the seems are so i can do this right.

 

I don't have a pic handy, cause I didn't take one of the seam when I was doing bodywork. . but if you look at your window on your door. Along the back side of it, there's a bit that goes straight up before it starts to towards the front of the car. Follow so far? good.. It's about two inches higher than that mark, if memory serves me.