Why an XL? It's hard to find a more versatile camera, or better lenses, or many other 6X9 rangefinder cameras at all. In addition to rangefinder focusing, it has ground glass focusing. The single window/viewfinder has brightline framellines for 80, 100, and 180mm lenses. The whole viewfinder window can be used as a viewfinder for the 58mm if you get your eye very close to the window. 6X9, 6X7, and 6X6 backs are available as well as 3 1/4 X 4 1/4" Polaroid backs. No other 6X9 RF camera offers such a selection of lens focal lengths and Zeiss lenses at that. Although it is difficult to find the XL in clean condition, the XL equipment I have on hand is clean, virtually unused since the 60's.
GRAFLEX XL GRAFLOK BACK body mount. This is the part that is found on the back of the body. This was customized with the addition of the extension rods that allow you to activate the locks from above. This feature would be useful, for instance, if this part were mounted on a view camera lensboard. It could also be used to create an extremely slim camera body. In the 2nd photo the above Graflok back (since sold) is mounted on this part. $75
LANE POLAROID BACK FOR GRAFLEX XL. This is the latest and best Polaroid back for the XL. The usual heavier and larger metal version was designed for the film that required that you coat the print after it was processed and it had a compartment for the coater. This version was designed for the 600 series film that need not be coated. RARE. $200.
CASE FOR GRAFLEX XL. This case was designed for underwater photo equipment. It is made of rubber or plastic. Waterproof, but no seal at lid. Will hold the camera with most any lens. Shown with 180mm lens, handgrip and complete GG back. $50
CASE FOR GRAFLEX XL. This case will hold the camera with most any lens shorter than the 180mm lens. The case will not close with the 180mm lens attached. Illustrated with camera with 180mm lens, handgrip and complete GG back. There is room for accessories in the case. The foam lifts right out. $25
RH 10/20 rollholders and more are found on my Tripod and View camera accessories list.
Tiffen 40.5mm to series 8 adapter, usable with 47mm Super Angulon and 100mm Zeiss Tessar, $20
Cable release socket for 80mm lens tube, with screw and locating pin on back side of socket. $25. I have some similar hardware but I do not know which lenses this hardware came off of. One set has a spacer to set it off the lens tube about 1/16 ". The one that I know was for an 80mm lens has been sold; the other one is still available @ $25.
Left hand grip with cable release and strobe mount and wrist strap, Ex, $125
Neckstrap or wriststrap mounting hardware, available in black or chrome, $10 each set, $7 for 1/2 set.
D-rings, couple to above flash mount and grip a 1.25" diameter shaft, $15/set
Strobe handle. $80
Camera bracket for small format camera, 35mm or digital SLR. $30
Camera bracket for rollei or other medium format camera. $30
Quick release cable fitting for use on most lensmounts (not 58mm or 47mm), with mounting screw, Ex+, $25
Guidebooks. I probably have what you want. $5-25 each, better deal for quantity.