fan speed on Hayden 2765 any problems?

I'm using the Hayden on my 408 with a Mopar 5-blade fan and stock shroud with a rebuilt 22-inch radiator. I have never had a problem with over heating or temp creep in over 7,000 miles. I've driven the car on long multi-day trips (mix of highway and stop and go traffic) in the month of August with no problems. My radiator was re-built by Glen-Ray Radiator using their three row core, it was expensive, and is heavy as hell :-) but it works great.