@NskLJ Sorry to resurrect an old thread but.. how much did you trim away? It looks to me like you have about the same amount of margin around the mounting hole as I do. I'm planning to box mine in and from the look of it, I'll just box in the factory shape/size to leave plenty of room around the bushing. But, if you really trimmed a bunch, I'd like to hear about it.
Also, boxed in with 1/8" I assume? The boxing will make it so much stronger than it was, and seems silly to use anything heavier than what the rest of the mount is made of...
Thanks!