I recently installed an XGT1 SVT pcm in my 99 SE. had to have the keys programmed. 160.00 at major dealership, 45.00 at small town dealership.
I got the pcm for 50.00 . not a lot of money invested. I also installed the 19 lb injectors. car pulls harder from 4500 to redline.
by far the best upgrade yet.