I pulled my engine, I had to lift the front of the truck about 4 feet to get the crossmember and engine as a unit out. Wasn't that hard, but I don't think you can do it with just a floor jack and stands. You can email me and I'll tell you how I did it all with an engine crane and a furniture dolly (no, you can't use the crane to remove the engine) Put Aerostar in the subject line.
I think I either blew the head gaskets, or heads them