Originally Posted by Swangin_Stangs
Does anybody know the gauge sizes of a 86 mustang notchback
Not sure, but they don't really equate to any aftermarket sizes.
You can make some aftermarkets work though.
Measure across the opening in front to get an idea.
Choices are 2 1/6", 2 5/8", 3 5/8" & 5" in aftermarket gauges.