I have a pair (for 2 roll bars) of the Tangent hidden roll bar mounts for sale. These eliminate the 'frankenstein bolt' attachment of the 3rd leg to the hoop for a much cleaner look.
I am switching to the breeze roll bars which need to be welded, so I no longer need these mounts.
New price is $90 each (http://tangentkits.com/Roll_Bar_Kits.php)
I am selling both for $100