Thanks to Suncoast, and a great DIY post, this was one of the easiest modifications I have done yet... GMG is shipping the WC roll bar this Friday - and will install later this month (I know the seats have to come back out - but I am too impatient to wait )
Now I just need some help picking out the harnesses - Factory GT3 6-point, Schroth GT3 6-point, or Simpson? Which ones works and fits the best with these seats? I have the Brey-Krause anti sub bar to put on when the harnesses arrive.

(If you look closely at the first pic, you will see fellow 6-Speed member "mikymu" DIY post "Modified GT3 RS Club Sports Conversion" pulled up on the monitor - which was extremely helpful for this mod!)

 

Scroth belts are not cheap..don't know how they compare to factory but I would think they would be cheaper...there are some other alternatives out there that are as good as Simpson from G-force, RCI and Impact...I prefer the Scroth as they fit just right and are easy to install...lets hear from others

 

I can't tell you anything about the harnesses, but those seats look great!

 

I don't have harnesses but I know Schroth is a well known brand. I once read a thread about harnesses and one guy said the brand he had was so abrasive that they rubbed his shoulders raw. Look into this before buying.

 

very nice i've done the search and believe me afrer long long analyzing go with http://www.schrothracing.com/ i'll go with them my self for my build in the end ! and with suncost as well for same set of seats but with clothes finish