Word of advice-get an EGT gauge! I found out the hard way. "Wow-this Powerstroke pulls the hills on cruise control like nuthin' " cost me an engine.
Set at 65mph, a couple mile very steep incline-it went right up. Problem was it was running on 7 cylinders afterwards.
when I put in my new motor, I put a gauge pod on my A pillar-EGT-boost-trans temp. My 1st break in trip taking it purposely easy, you could see the egt go way hi on the hills. Reading all the Ford diesel fourms, 1150* is all you want to get. Set on cruise, you could shoot to 1300 with just 12 psi boost.
If I foot drive it to hold the egt at 1150, I'm cresting some hills at 55.
A problem is lack of room in the van to fit an intercooler-like the pick ups have stock.
I may be a bit heavier-and I dunno how the rolling hills of Mich. compare to the mountians of Vt.-but just beware-you can ask too much from the motor.