Anyone out there with some web addresses or actual experience knowledge please help....

I have a 1955 Chevy 2 door Bel Air, that I am wanting to turn into hmmmmm let me see here, maybe a Hot Rod.....
Anyway

My problem is this...I want to chop the top, I know, how original, well, The actual chopping is not my problem, its reshaping the roof, the the pan where the rear side of the roof(Rear windsheild) meets the top of the rear end. If anyone has any ideas, or web addresses where they address this sort of thing, I would appreciate it.