ive had my pcm just zip tied down on my 98 gt since march its fine. i got extra big ones and i got them wired into the holes below where the stock air box used to be and they form an 'x' over the pcm. and i took one of the square squishy pad things and glued it onto the strut tower wheel well thing and leaned the pcm into that so it doesnt scratch the paint and it holds it in place better. i think, might be wrong, but think u need a 99+ coolant tank to be able to use the pcm tray. and if your not aware, that gets mounted on the right strut tower, right behind the fuse box.
