I have to disagree on the thought of the vertical exhaust for the 3000 & 4000 series tractors being a "headache". While yes you do have to remove the vertical pipe to open the hood, it really isn't that complicated, or time consuming. The pipe mounts on a new elbow that is supplied with the kit, like this:
Then it seperates right at level with the hood, like this:
And then it ends up looking like this:
IMO, I would get the vertical exhaust. It gets the fumes up above you and into the air, then they aren't being sucked into the cabin through the filter. While yes you might not be able to smell them and it might not be a problem at all, your better off having those fumes go up and away instead of having them linger. Having to remove the exhaust to open the hood is really a none issue. It comes off very easy, just a wiggle and it slides right off. Plus, how many times are you really going to be opening the hood when you go to use it other than when it needs service. You can check the oil without opening the hood and if your having to do that much service on your tractor than you have bigger problems than removing the exhaust all the time.
The main reason they design it this way is because the 3000 & 4000 series tractors are modeled more to homeowners, people who have for years just used garden tractors. Look at those models, they just look like over sized garden tractors with an immense amount of features. The vertical exhaust kit is more of an option on those tractors than anything else because they figure most owners don't like the look of it anyway. Personally to me it isn't about looks, but more about function. IMO, the vertical exhaust is a necessity on a diesel tractor. Breathing all those fumes from the low, horizontal exhaust is ridiculously stupid.
