Can't find any info on the factory optional rear sway bar for a 1967 Catalina. Was it available in 1967? Would a 1967 Impala be the same width? Know they had them. (F41 option) If I can find a Pontiac bar, what years would fit. I would assume 67 to 70, anyhow. Not interested in an aftermarket bar. Probably about the look as much as the better handling. Have a large aftermarket front bar that will do most of the work.