2003gtstang

Last night i had purchased 04 cobra gauges off ebay wih the intent to put them in my 03 gt. After reading some threads on google I had gotten mixed answers. many say it dosent work. Also they say the stock circut board is not compatible with the cobra one. Can anybody help me?? I think i can i just remove the whiteface off the cobra gauge but i want to keep the green glow of the cobra gauge. HELP please