I own a 1993 Thunderbird LX, I love my T-Bird, but I'm working w/ a 3.8 V6 w/out supercharger option. I have a few mods done with the air intake, exaust system, and plug wires, but I can't seem to find a place to purchase performance parts such as aftermarket superchargers and cam kits. If you know a website I should check out please let me know. I also was wondering, a couple of my buddies was telling me that I should upgrade to the ford 4.0 v6 cam in my 3.8. Is this even possible and if so is there anything else I would have to change?  

You might could check out V6mustangparts.com and see if they have anything.  I don't know if the Bird V6 and the Mustang V6 are the same but maybe some things can be crossed over.  There's a lot for the 3.8 available.   Check out this month's issue about the green LX.  A V6 that makes over 500 hp.   

this is the best site i have found

http://www.supersixmotorsports.com/

I think I gave the wrong site.  It's V6mustangstuff.com.  I can't believe I forgot about Super Six.  My brain wasn't on that morning.