Originally Posted by Hotrodz

I have an RPM 4 point rollbar in my Z. Bought it from Jenz who used to be on the forum years ago before she sold her Z. I paid $900 for it and her husband installed it for me. I have purchase the side bars and the cross bar to make it a 6 point and NASA and SCCA legal for time trials. The cost for those parts were $550. The fab and install is about $1000. There is no reason with your seat placement that your head should come in contact with the rear bar. If it does you wouldn't notice it because your neck would already be broken. There is a video of a guy crashing in a camaro after reaching 200 mph at a half mile event and walked away from it and he had an RPM 6 point roll bar. It did its job and did not collapse saving him and his passenger's life!!!