I don't know what the GSP rollbars looked like, but Setina made them here for the WSP fleet and many other agencies specifically for the SSP platform. The local group here had them remake about 6 from Setina using one of the originals from an 87 SSP. They turned out perfect, and the price was around $150 each (included brackets and foam padding).
We have 2-3 guys locally that want to get one made, and believe that Setina would likely do it again if there were say 8-10 being made all at once. If you think that may work, I can try to get some contact info if you want to find out and get a group buy going.
__________________
Ryan
|