:h Why are you guys pining for the old days? The Ford 6.2 has so far been very solid. 385 HP, and 430 Tq. Pair that with the 4:30 gears, and 6 speed, what more could you want from a gas engine? The big blocks up to the 90's didn't do that much. Oh yeah, you want diesel like performance, and mileage. Not gonna happen. You want gas? The current crop of V8's no matter which brand you choose will do a fine job towing within their specs. Yes, you'll be in the high RPM ranges, but that's the nature of the beast. They're made for it. The gap between gas and diesel won't be closed. Nowadays, you have to choose.
