I have favoured the V6 over the years for good mileage,,but they are sensitive to overheating,, if the cooling system is up to par then its a no brainer.>>>Dan
I try to discourage people souping up the 8v71 it makes no sense to me you take a 8v92TA set it at 350 to 400 hp it will out preform and get better fuel mileage than the 8v71 or 6v92