You have to swap the spindles from side to side. I have them to the rear on my 66, done by accident when I installed the spindles but it don't really matter, just harder to bleed the brakes cause the angle of the bleeder is off.
Bingo! Other than the position of the caliper, swapping the spindles side to side doesn't change anything. The bleeder does end up in a less useful place, and you'll have to keep an eye on your brake line routing to make sure your lines are long enough and don't hang up on anything.
