Hello all, I'm thinking of upgrading the brakes on my 86 5.0 GT. It still has the stock 4cyl settup that Ford used until it went to the 60mm caliper for 87-93. I have already purchased the correct spindles needed for the upgrade. I want to go with the 73mm SVO calipers from the 84-86 SVO cars, but in the fine print on the bottom, it says that they are not recommended for drum brake rears. What gives? This is kind of making me worry... any insight would be greatly appreciated.