You might want to call Banks and ask about your particular model. If you have the engine size, and such handy, they can quote you a specific price for your RV.
I installed the Banks system in their factory in Azusa CA back in 1998 on my 97 Ford based Bounder. They where about a hour drive north of my home in Orange County. They can handle about 4 installations a day in their factory location.
I was impressed with the extra power. It was not 'night and day' but it did change. It did less frequent downshifts too.
The potential problem might be extra HP means more heat, and that can mean the radiator will become overloaded on a long grade. My buddy installed a diesel engine on a train car (Knotts Berry Farm) and was told you need 8 square inches of radiator per HP. 100 HP = 800 square inches, or 24X24" X 2 layers was plenty.
In your case, if the radiator gets dirty (and they do) you might have overheating problems. But keep it clean with a garden hose once a year, and you should be fine.
There might be a increased size aftercooler for your engine. That might be well worth it, because the cooler air going into the engine, the more HP it will make, without adding heat to the engine. The larger aftercooler has larger air passages, and increased size (so the factory might get by with say 36" wide and 15" tall, while aftermarket might be 36" wide and 30" tall) will pass as much air with less air pressure drop or restrictions.
Good luck,
Fred.
