Okay well i searched high and low and could not find out how or what anti-bub bars would work on the ROTtec GT3 seats that I bought and since I just recently purchased some Schroth Profi 6pt harneses it was getting fustrating. I did find out that the gt3/gt2 oem sub bar will not work and that the Brey Krause may fit but no posts or pictures of the BK sub bar mounted to any ROTtec seats. So after looking at some of the BK sub bar/seat brackets I figured I might be able to come up with a fix.

Here is the BK anti sub bar:



Here is what i purchased from HomeDepot
1- 4' 1/2" all thread
1- 4' steel rod (1/2" all thread rod just bairly fits into hole)
4- 1/2" turnbuckle hex nuts
4- Grade 8 1/2"x1" nuts
4- Grade 8 flat washers
$23 bucks total

Here is what I put together: