[Buzz]

Edit - sorry, I see this info was already posted about the BAT ad.
As Snakeeyes said, some of the phone numbers in the attached pics may lead to as source of a manual and some useful info. Most Integrity Cobras had an accurate looking single roll bar, so the proper gussets and mounting points may already be welded/located on the frame.
I see you're also aware that Integrity may have morphed into Hunter Cobras as detailed in the other threads about Hunter. Have you tried to contact Randy Hunter? By all accounts he's very helpful and forthcoming with relevant information.