This is a FI unit their s467 ETR-HO with a 75mm turbine. They told me they had serveral 12v's towing with them just hoping some of those ppl are on compd!
Not what i would call a good charger for towing. If it was a light landscape trailer and you kept the rpms up you'd be ok but i wouldnt want to hook to a loaded gooseneck with it.
I would think that will still get hot. The truck in my sig will get to 1200* fairly easily if you don't pay attention and that's just towing scrap cars stuffed with steel (3-4ton average) on relatively flat roads. And that's a 64/74-14. I would look into something more along the lines of a S362 or S363 with a smaller exhaust housing