I had a 7.3 Quigley van turned up 75 HP. with a 4" exhaust, ran terrific only bad thing was the engine noise. A horse hauler I know will only use 7.3's he has tried them all and his trucks are on the road 24/7 hauling very expensive horses.
Wife and I have been driving by this place for sale 2 years, we said they missed the boat because it didn't sell when rates were low no way it would sell now, about a month ago it sold can't imagine the payment with rates this high.