Removed the Power Brakes and swapped to Manual Brakes. Got Questions!

I had a problem getting a pedal, and it turned out that the 76up calipers have a larger piston, and the 15/16 MC didn't move enough volume so I went with a 1 1/16 and got my pedal back.

Well that there is a good question also. I know my Scamp was swapped to 73 up discs for the large bolt pattern wheels before I bought it. I just dont know what year they are. It does look like the caliper has a large piston. Is there anyway to determine what year calipers I have in the car?

Also what if I switch to a aluminum Dakota MC, well I think thats what your running? Like some of you use on your cars.