I'm looking at getting some drop springs for the rear of my 59 L/B fleet. Here is my question. I'm looking at the Brothers catalog and here are my options- Reversed eye mono leaf that drops it 5" for $429.00 and a multi leaf that will drop it 5" for $399.00.....Why would i want a mono leaf and pay an extra $30 if I'm going to get the same drop with multi leaf for the cheaper price? Is there a difference in ride quality with mono compared to the Multi leaf? Also on the task force trucks, how far generally speaking can I drop the rear of the truck before I will have to c-notch the frame?