I have a quick question about compatability of parts between a 2000 Crown Vic 4.6L 2v and a regular mustang GT 4.6L 2v. A friend would like to get some underdrive pulleys for his crown vic, will the same underdrive pulleys that work on the mustang 4.6 work on the crown vic 4.6? And what other performance parts, if any, are basically compatible between the two. Thanks