I just took my K5 in for inspection since I want it to have new inspection when it goes for sale. They didn't even bother inspecting because it didn't pass emissions. In fact it failed horribly. One score was 2 times the limit and one was 6 times the limit. The other was about 1800 points below the limit of 2000 something. This makes no sense to me. Can boring a blow and installing a real slight lift cam really affect emissions that much? I replaced my 305 with a 350 bored .030 over. You would think a 305 that burned a quart of oil a week would do way worse on the test than a fresh good engine. My cats are gutted and I am sure that would bring my score down a bit but the 305 passed with the same setup.