Quick release rollbar sides.

I just got done putting a 10pt in my Dakota. The door bars can be made to swing out. The stubbs according to NHRA need to be 8" from the floor and the main hoop. Basicly meaning the roll bar must extend 8" before the swing out is installed. I have seen shorter and mine are only 4" because of lack of room. I was told if I went to a national event I might have a problem but under normal circumstances there shouldn't be an issue. Chris Alstons chassis works has this install posted with a removeable back bar.
http://www.cachassisworks.com/Stories/HowCAC-005_WEB.pdf

You could also give them a shout. They have a great techline and knowedgeable people willing to help. Hope this helps!!!!8)