The mounting points are decent. Not too shabby and better than clamping them to the trailing arms or what-not. The rear is the 27mm and the front is 25mm. They're big
Everything bolted right up, no need to weld anything. I recently had to take everything off to adjust my spring plates, and it was pretty easy to take off and put back on.
There are a few pics on my website of the front and rear bars. Go to
http://homepage.mac.com/aurumen/PhotoAlbum1.html
Nick