Welcome Mike and Tammy. I thought I posted this last night, but I think I lost my Internet about the time I hit post. Anyway, wow...big rig. I think your 6.4L will do a good job of pulling that, but if you are close to upgrading the truck, you will absolutely love the way the 6.7L pulls compared to the 6.4L. I had a 2008 and was amazed at the difference. The 6.4L did great, but the 6.7L did that much better.
Anyway, just wanted to say Hi from the east a bit, and hope to see you down the road!
Ed and Sharon
2010 Wildcat 28RKBS
2011 Ford F-250 XLT, 6.7L PSD
Ride-Rite Airbags and Airlift wireless remote compressor...nice!
I thought I was wrong once, but I was wrong!