Rear crash bar reinforcement for the gussets
Moto Guzzi V700, V7 Special, Ambassador, 850 GT, 850 GT California, Eldorado, and 850 California Police models
I extracted this information from Ross Raymond on the old Yahoo! Loopframe_Guzzi news group (which has now moved to Groups.io).
Police frames were modified slightly to reinforce the gusset to which the top of the rear crash bars mount. The reinforcement is nothing more than a rectangle piece of steel that was welded in place. From Ross:
It is a bit hard to measure but I got the following: 35 mm long × 22 mm(23 mm) high × 3 mm thick (a little thicker than 1⁄8 inch).
My plates are about an 1⁄8 inch above the straight of the web, and the rear point of the mounting hole is 17 mm from the rear edge of the plate.
These are obviously all done by hand, there is a variation between left and right, I measured the left.