Quick changes are run in all classes with much success. They do use more horsepower than a 9 in Ford. Most will give it up for the chance to get the "right" rear ratio. The biggest draw back is the lack of ring and pinions to start with. I believe a Winters is one of the QC's compared to a "Champ" or sprinter style. Most are 4.11 or 4.88. V-8 QC's can be fit with ring and pinions starting at 3.27. Higher ring and pinions for Champs are available at a sustantial cost if found. Thats where the horsepower is lost. Trying to make a 4.11 into a 2.20 those spur gears being so different in size chew up the horsepower. Same for overdrive transmissions, they use HP also. The 9 inch Ford is very strong and uses more HP than others due to it's pinion angle. But you gotta use something. Good Luck