This has long been a favorite idea of mine. I think everyone knows that the power to weight ratio is key to mileage. I have a 2000 'A' DP.
It has the sloping front cowl.
I think it has the 300 HP Cat engine with an Allison tranny. I consistently get 10mpg whether empty or towing my Nissan "Juke" or my
"PT cruiser ragtop". Now in a previous post someone mentioned thatthe dealer would not let you have a larger engine in a smaller unit. I have checked into it because right no I could not afford to, but if I ever have the opportunity I feel that if I got the 500HP engine and put it in a 38ft rig I could possibly achieve 11-12 mpg. Carrying it a bit
further with a Banks exhaust system maybe even better. I am sure that as long as I am willing to pay for it, the manufacturer would build it for me.
Any thoughts??????