As far as Cummins engines go, I have a 4 cyl. turboed, two 8.3's and two big ones.I like all of them.For what you are proposing, I would look in a different direction.Go buy an International truck with a 360 or preferably the 466 IH engine and you will have your whole frame/powertrain sorted out.I have a 96 IH 4700 series with a 466 electronic hooked up to a 7 speed trans.It is about250hp. and nice on the road speed wise.An International engine is every bit as good as a Cummins.Just not as much talk about them cause not to many people have agricultural ties anymore, which is where these engines grew up.Jim.