Quote:
Originally Posted by njsteve
They were for stiffening the radiator support to fender area for better handling. Also played a part in the new 5-mph crash regulations for 1973 (which begs the question as to why they didn't put them on all 73 Firebirds and not just T/As and Formulas with the handling package).
Did you get an actual 1973 set? They are different than the 74 and up bars as they were a little longer for the mating with the rubber bushing on the upper bumper bracket unique to 1973.
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These were on All '73 Birds... Not for handling, for crash. Combined WITH the factory 4 piece "Box" behind the core support for '73, they added around 100 lbs.
I have seen these on a factory 250 car as well.