I have a 1997 Thunderbird with a 4.6 engine and an allen supercharger. I am looking to rebuild it and was curious as to if you could rebuild it or if you knew of anyone who could rebuild or modify the one I currently have. I am really in over my head with this!!
Scotty doesn't do heavy work such as rebuilding engines. Normally most of us here would recommend a remanufactured engine from a good rebuilding company. However it sounds like you want a custom performance build to work with the Allen blower. In that case you're going to need to find a shop that can provide that kind of specialized service. We have a few mechanic referrals in the FAQ, but I don't think there's anything like that.
Why do you want to rebuild the engine? Does it have problems?