I always thought they were "self inspection" meaning you have to keep up on it yourself, and you don't get a sticker. They should be able to tell you at the DMV if you stop in.
If you're getting a diesel trying to save money, it's not going to work out. Trust me on this. If you just want it for coolness, go for it. The cummins engine is great, it's just the rest of the truck that's the problem.
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