Depending on how much work you can do yourself it could double in cost or more from the cost of the motor. You may need to get a donor harness to splice into the Pantera wiring for the connectors to the control module that is available seperately from Ford. Deck lid will probably need to be modified to fit the supercharger. Wheel housings may have to be modified to clear the heads. You will need additional plumbing for the intercooler radiator. Motor mounts, headers, and return style fuel system(if you use the ford control pack. Wilkinson is currently putting a 5.4 supercharged dry sumped motor in a couple of cars. He would be a good resource to tell you what you are looking at cost wise and parts needed. That motor is going to be heavier than than the cleveland and then the weight of the plumbing and additional radiator. Is your ZF in good shape to handle the power? Are you going to want to modify it for different gearing to keep from blowing the tires off in first and second?