greg bender
http://www.thisoldtractor.com/gtbender
I extracted this information from Ross Raymond on the Yahoo! Loopframe_Guzzi news group.
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 L x 22 mm(23 mm) H x 3 mm thick (a little thicker than 1/8").
My plates are about an 1/8" 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.