I'm actually one who bothered to have cats on my car & set things up to retrofit if needed emission parts to at a minimal be able to deal with a visual inspection as per Pa inspections for non emission testing counties. I put on dual cats with the Pypes kit, exhaust manifolds that can have AIR tubes, smog pump that is functional, an intake with EGR port, TVS's on hand to make things somewhat/look like it's all fuctional. Don't have a OE type closed air cleaner but using a repop open element one with the vent tube. I even have some CARB OK'ed parts that don't really makes a difference in Pa. My set up is simple to cover my arse for that just in case if it happens. Now if I would get a classic or antique registration I won't need to worry as those are exempt.Let's see a show of hands who is still running a smog pump. Or catalytic converters. Or a spark plug gap of .065 or bigger. Hell, a good portion of street cars here probably aren't even running vacuum advance.