Rustbucket,
I am in the process of putting a 1989 5.0L from a mustang police car into an early 1974 260Z. The engine and T5 transmission are installed. The brakes and suspension are complete. I am having a driveshaft made. The wiring is complete(I am using the factory 5.0 fuel injection). The paint is done.
I have been working on the project for a year and am nearly ready to start the car. I too wanted to be different and use a nonchevy V8. This path was probably more difficult than using predesigned pieces like those available from JTR, but I think that it is worth it. Email me with questions
good luck