As I understand it, all original GT had ppor weathersealing. I do know when Safir P1116 was driven home from Detroit in the rain, several inches of water accumulated in the tub!
The issue on original cars (and therefor by extension, I assume the SPF) is at the front of the door where the hinge post is. The pinchweld type weatherstrip used at FAV/JW was not "tall" enough to be compressed by the inner seal surface of the door thus allowing all the water that flowed off the nose and thrown up by the front tires to be forced aginst this semi-non existant seal and run right into the cockpit. This can be reduced with alternate weaterstrip or with a shim on the door such as 3M double sided moulding tape to build up the surface.
The door/roof cutouts leak less than you might expect at road speeds....at track speeds it becomes more of an issue with pressure inside forcing the doors up, thus the development of the "eyebrows" to keep the door ends from rising.
Rick
The issue on original cars (and therefor by extension, I assume the SPF) is at the front of the door where the hinge post is. The pinchweld type weatherstrip used at FAV/JW was not "tall" enough to be compressed by the inner seal surface of the door thus allowing all the water that flowed off the nose and thrown up by the front tires to be forced aginst this semi-non existant seal and run right into the cockpit. This can be reduced with alternate weaterstrip or with a shim on the door such as 3M double sided moulding tape to build up the surface.
The door/roof cutouts leak less than you might expect at road speeds....at track speeds it becomes more of an issue with pressure inside forcing the doors up, thus the development of the "eyebrows" to keep the door ends from rising.
Rick