Hi, I am thinking of buying a 99 Ford F450 grain dump from a local contractor. It is a gas v10 and only has 30,000 miles on it. Now for the truck he only wants $7000.00. The only problem with the truck is that it need either a brand new or rebuilt engine because the motor is shot. To get a brand new motor it would run about $6500.00 and a used would run about $4000.00. So for the total price do you think it is worth it? And if so, would you put in a new or rebuilt motor? The truck is very clean and the contractor seems like a pretty honest guy.