wes, nope havent measured the box yet and im fairly sure it is bigger, but should just wedge in maybe with some slight modification to the bulk head, maybe move the heater matrix slightly to accomadate it, also forgot to mention that we removed the viscous fan to allow for some more room and are going to run the twin electric fans from the sierra as they are smaller, and good idea wes, sounds like a plan, il take a picture of that when its done.