That's what I run. I have a ton of usable rip with this combo. I added another fan for the motor, but after ten minutes the hottest I've got it is 120 degrees. Fitting the fan under the belt tunnel is a little tough, but not a deal breaker.

So, no problems, and I've never been passed in a straight line with the 4.5 550. Ever. I even run the kit pinion that Novak sent in the AE package.