As mentioned the 1000 shutter w/rodenstock lens is not reliable, and I have been told that with the best CLA and under the best circumstances, lucky to get 1/800th speed.
The red shutter release mechanism is often incapacitated. The batteries are very expensive. Cams for the rangefinder are often lost, and each lens focal length requires a different cam. There is a source on the internet for measurements to cut the cams.
The front (red button) release relies on three ribbon cables that run inside the folds of the bellows to transfer current to the solenoid on the front standard to operate it. Plus that, the front release requires a special lens board that has linkage inside to trip the shutter from the solenoid. (Chances are you have that board if you have the 1/1000 shutter on this camera).
However by now most red button shutters are non-operational. Battery doors are often lost as well by this time.
I use a lightened Super Speed Graphic. Weight reduced stripping all the rangefinder and handholding equipment out and tweaking all the movements for the most. Now considering another tweak for some back movement. I have "flat topped" the body taking an inch off the top. (This was a non operational and non redeemable Super Graphic- I would not disable a good Super or Super Speed Graphic). The difference between a Super and a Super Speed is that the Super Speed came equipped with the 1/1000 Rodenstock lens and shutter. The name plate on the door indicates which one it is. So if you have a Super Speed name plate but not the fast Rodenstock lens, it is the same as a Super.
There are a couple of pages on Steve Gandy's Cameraquest site (http://www.cameraquest.com/supergrp.htm) that thoroughly outline the features and advantages and features of the Super/Super Speed, including the "hidden" front movements as I refer to them. In addition, he has a page that explains all the movement tweaks, and a page that shows one person's mod of the back for some back tilt.
Graflex sold the rights to the Super/Super Speed to Toyo, and they were made by Toyo for a while as predecessor to the Toyo 45 metal field cameras. The Toyo model name plate indicates Super or Super Speed with the name Toyo after, and are quite hard to find.