On Ebay. No affiliation, etc.
http://cgi.ebay.com/ebaymotors/_Car-Truck-Parts-Accessories__AutoPower-Roll-bar-for-a-Porsche-993-Cab-Conv_W0QQitemZ290264887690QQadnZCarQ20Q26Q20TruckQ20PartsQ20Q26Q20Access oriesQQadiZ2865QQcmdZViewItem?hash=item290264887690&_trkparms=72:317|39: 1|65:12|240:1318&_trksid=p4506.c0.m245#ht_500wt_0

 

Hmmm...., I have been thinking about a rollbar. I assume you could have it welded together and therefore clean it up a bit by not having the visible nuts and bolts.

 

No idea about it. It is just a very good price. I am not sure if it is allowed under PCA rules for DE's though.