'91 ZR1 different Mufflers and Control Arms?
My apologies if this is a dumb question but I have been looking at 90-92 years and I noticed in the underbody pics of a few '91's some have the rectangle muffler and some have the double pipes on each side.
Also, I see some control arms are black and others are silver.
Was this an option or part of a package or color combo?
Thanks for the information.
Brad
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