Mod chip help needed

i need to find out if my saturn is 20 or 21 pin, how would i go about doing that?

also if it is 21 pin, what mod chip should i get and where should i get it?
take out the screws on the bottom, remove the top half of the case. look in the lower right corner there is a ribbon cable running from the cd board to the main board, unplug it from the main board and count the silver pins. if its 21-pin you can get a modchip from,, or, and probably more places.