I had an Eagle on a v8 Dakota at one time. I had to plan on passing anyone about 15 mins ahead of time. I didn't have the gearing you are talking about and we didn't/don't drive fast but it was kind of scary but probably 18mpg. Then I went to a RAM 1500 EcoDiesel. That was a great setup. An Eagle on a full-size pickup means the FWC was behind the cab more and we go 21mpg and great power. The issue there was (even with upgrades) we were still overweight and were more worried about the brakes. Now, we have a 1 ton, 6.6L, diesel with a flatbed. No issues. Of course, we get about 17mpg.
I guess what I'm saying is there are trade-offs with any rigs (cost, fuel, etc.) and you have to find that balance. If the truck meets your needs, I think the gearing will help with the "power" but not the other things.
I guess what I'm saying is there are trade-offs with any rigs (cost, fuel, etc.) and you have to find that balance. If the truck meets your needs, I think the gearing will help with the "power" but not the other things.