Z4 roll cages
Looking for suggestions on best roll cage setups for a 03' Z4 roadster. It seems inevitable that I will want to take the soft-top out, for weight savings and other reasons. Although I anticipate this car slowly turning into a track only car, I would like to maintain the option to drive it on the street, top down etc. My ideal setup would be to remove the soft-top, buy a hard-top and install a full cage.
So roll cage setup suggestions with and without the soft-top removed are welcomed...
Also any suggestions for good roll cage installers in the Northern CA region would be greatly appreciated!