Sorry to bring up an old thread. But figured it was better than starting a new one and this one already had a lot of good info. My 77 280z is nearing completion with an LQ4/4L60 swap and was contemplating doing a full roll cage. The car will be primarily a street car, followed by fairly frequent drag racing and then the occasional track day (willow springs, maybe laguna seca). After reading this thread and looking at the NHRA rules I know I will never need one. Moving on, I am currently aiming for low 12's/high 11's in the 1/4 and in the future I might build the car to dip into the 10's. I have friends/family that can fab up a custom cage/roll bar, does anybody have recommendations/pictures of a setup that will protect me and my chassis and not destroy my interior??? Thank you in advance.