don't test the 6, 7 and 8 liter engines only test the 2.4 and 3 liter ones.
The truckers lobby is just too $strong$ to get their trucks tested, so the best

the legislature can do is hassel the little guy who has NO lobby contributing $$$ to his or her cause. This happened recently in PA.
I'm not sure the founding fathers of this country were thinking... "Government by the Money, for the money and of the money"
Most every emissions guy I've talked to will freely admit that emissions testing in general is a joke.
Thank gawd that I have 2 of 3 vehicles registered in PA as antique, no emissions and no inspection ever again.
good luck,
Robert