Installing Kelsey Hayes Caliper Pistons ?

Got the calipers tore down and pistons finally popped out. Got the pistons and seals ordered and should be here thursday. next is to clean up the bores..
Trying to picture how to go about putting the dust boots on FIRST, before the pistons go in..i took a quick shot at doing it that way when i was removing the pistons just to see and it seemed difficult with the boots already in place, but i didnt try too hard either as i had brake fluid everywhere..I know i am anxious to drive this car after all these years of wanting disc brakes!!