And so, as for JC and Ron, more trade-offs.
And again as for Ron, if you had a smaller V-8, plus towing a 4,000#+ toad, could result in even greater gas consumption, while giving up power that might otherwise be had for "free" or for very little cost otherwise, either as an option, or in fuel burned. Or as in the simplicity in having the standard V-10 chassis serviced otherwise.
Not to mention the feeling, when punching the "go-pedal", that you're only stepping into a pile of "cow-flop" as Billy has otherwise mentioned!