Kevin Hoff, you're never going to get the club to agree to officially recognizing certain things as non-performance-enhancing/ therefore acceptable. Some people don't give a crap (yes, that would include me), because they know it doesn't make a difference. Some people get a bug up their butts because it's not specifically allowed in the rules - so they'd probably even bitch about a WRX that doesn't have the "WRX" emblem on the back running in stock class - or in SP, where debadging also isn't allowed.
The generally-accepted rule is that if you're going to "cheat" then you don't tell
anybody about it. (or that's what I was told, anyway...

)
There will always be people who try to make you feel guilty for having something non-performance-enhancing on the car that isn't allowed, because they want to go strictly by the rules, and you're not. They'll say things like: "If you're just out to have fun, why not run in SM & compare times with the stock class you'd be in if you didn't remove your "WRX" emblem?" Despite the fact that the car is totally stock other than old, crusty R compounds...
Of course, I know a certain national champion who competed last year with a supposedly STX-illegal car, kicked my ass & everybody else's every time he showed up, and nobody ever protested him at a THSCC event. So yes, some people will bitch and moan about stuff if they know about it, and some will hold a grudge toward you, but if they don't feel strongly enough about it to protest, I say screw 'em.
Now, if somebody with an engine swap or lowering springs or something that actually made a measurable difference was running in a class that didn't allow it, I'd definitely say bump 'em.