My 78 Malibu has the F41 with the front and rear sway bars. The front bar measures just a tick under 32mm with my digital caliper. Same diameter as my 87 Grand National.Is an OE F41 bar actually 32mm/1.25"? I swore it was 7/8 for non F41 and 1 1/8 for F41.
I have a 34mm early z28 f body bar on my 2+2 and it does feel stiffer than the OE F41 bar for what its worth it's few pounds lighter.
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