99STEEDAGT

i got the tranny from performanceautomatic.com it was actually pretty cheap. it was just over a $1,000 for the tranny + shipping. or you can take your existing tranny and buy parts from performance automatic and install them yourself. i think its cheaper to buy the built tranny, all of the parts ( converter, valve body, shift kit, kevlar bands, etc.) are kinda pricey, and if you dont know how to install them, the install price can kill you.
as far as the shifter B&M is the only one i found that was a direct bolt in without having to modify the center console. Hurst shifters will fit, but you will have to hack up your console. ebay might have a few good deals on the shifter, i bought mine from summit, it was like $250 + shipping.
hope i kinda answered some of your questions, if not drop me a line

sstang

I have seen them on a few sites for sale and they only go up to 99' GT's....why is that? Will they fit 99-04?

And did you get the ADOE transmission from PA?

99STEEDAGT

yeah i got the tranny from PA. they are very friendly and knowledgable. are you asking about the shifter or tranny? the shifter from B&M goes up to 2000 GT's. I'm not positive, but i think the shifter on 01's + is located in a different spot than the 99's so it wont bolt-up directly, you may have to modify it. But im not a 100% on that.