73 up disc brake conversion. Is my caliper going to work when revesered to oposite sides?

Your attachment wouldn't open for me, so I'm not sure what you wanted to show. Did you also switch the calipers to the opposite side? If not, you may have them mounted upside down. Make sure the calipers are mounted on the side of the car that positions the bleeder at the top of the caliper, otherwise it's next to impossible to get them bled correctly.