Where are your nipples?

Not those!.. your brake bleeders. I have M calipers in the front and SC type calipers in the rear. Since these are going on a 914 I dont know which side is which.
I assume the single bleeders go on the top but I have seen some pics where they are on the bottom.

On a side note. My front M calipers have very small bleeders. They do not match the speed bleeder type Pelican sent me. Is there a variation on these calipers? I rebuilt them with M caliper kits,they use M caliper pads and have the line input on the side so I am fairly sure these are M calipers but without part numbers I cant be certain. Any clues?

Thanks,
Rich

On single bleeder calipers, the nipple should face up. There were some dual bleed calipers made that were able to be used on either side which may explain a downward facing nipple.