Need a photo of a 4 speed hump from underneath 1972.

Hey Guys-

I’ve got a client who asked me to install a 4 speed hump on a 1972 Dart body. Does anyone have a photo to share with me what the finished look from underneath factory should be ? Especially if the body is on a rotisserie. I want to do a nice job with seam sealer and know how much original floor is left behind.
Thanks!
Syleng1