I'm 6'2". Friend has a stock height 32 three window. It is pretty tight. I think I could stand a 3" chop but chop and channel - no way.

Another friend just purchased a 32 five window. Old time hot rod that had been channeled the width of the frame. I could not get in it to save my life. Incidentally, this car is in the process of getting a new chassis and original floor.

Randy makes good stuff. Call him and tell him what you want to do. I'll bet Randy can build it for you cheaper and better than you can at home.

Personally, I like the exposed frame on a 32 Ford highboy. In my book it is a crime to hide one.