reviving thread from the beyond..... what's the concensus on universal harness bars? Our cars use a 49" harness bar and companies like NRG and Braun make universal harness bars of that size? Is it safe/worth it?
For what purpose? A harness bar as an addition on its own is only "safe" at an autocross and only when you have zero chance of collision. A harness bar is a "hold you in your seat device" and very far from a safety device.
Acceptable levels of car prep:
For the street, nothing but stock belts, stock seat, and stock airbags is actually "safe". If you put a full cage in, the airbags need to go and you need to be wearing a helmet. If you put a half cage in, similar rules to full if you go to a fixed seat, but a stock seat and stock seat belt would technically be okay, as long as the front seats have enough room to lean 6-10" back in case of a rear end collision when you and your passenger are in. At no time of any sort should you ever have any living or breathing thing in the rear seats if you have a full cage, a half cage, or a harness bar.
For street and track use, only the schroth pro quick fit is considered suitable in a car that can use stock belts on the street and the schroth on course.
For solely track use you're looking at a half or full cage with proper fixed seats and either factory or welded supports/mounts.