I fulltimed with a 97 Itasca Suncruiser with the 460. The full Banks Kit made a very nice improvement in torque and a small improvement in economy. The factory configuration does not allow the big displacement engine to breathe air in or out efficiently.
Also, I installed an insulating quilt under the doghouse to cut down on engine heat and noise. It was very effective for heat control and helped with the noise a little. It was installed with a spray on aerosol adhesive.
George R. - Fulltiming since January '03
2007 Newmar Mountain Aire 3991
2012 Chevy Malibu LT1