where to find parts

I recently bought a 94 bird, got the 4.6 and the indie rear with trac-lock, i'm pretty impressed with the overall performance, but, must make it better, if you guys could give me some links with good info like specs and where to get some mod parts i'd appreciate it.

Hit the link below
Thunderbird & Cougar Club of America (http://www.tccoa.com/)