RodeoJoe: [sarcams]Judging by his screen name, my guess would be California :P I could be wrong though[/sarcasm]
RobinCali: There's a guy on SCCoA who put a SC engine in a Mustang (I want to say 95) His screen name is V6Sprout. He might be able to help you. I believe he also posts on Mustang boards including www.3.8mustang.com.
1994 Thunderbird SC 3.8L Supercharged
1999 Crown Victoria P71 4.6
2000 Explorer 5.0
Basically, just pull the 98 engine out, set the two engines side by side, and swap wiring harnesses, sensors, etc. You'll likely need to reuse a few other pieces from the 98 engine, such as the upper intake. It's a very easy swap to do.
The vacuum ports are a little different. You should be able to use the 95 upper intake, but the 98 would make it even easier. I've done the opposite swap before, a 98 3.8L from a Mustang into a 89 Cougar.