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I am confused. I can not decide on which unit to purchase? I have a 2003 6.0 I do pull a 36' rv once in a while. Thanks. Also your opinion on exhaust systems?
There are already tons of posts on this topic and you'll find lots of information using the search feature.
There's no clear cut winner between the two - they are both great products.. If you do search back and look at the posts you'll see that there are lots of strong supporters for each product.
I don't think that there's any need to start another round of replies on the topic at the moment.