Your stock shocks are 12 and 5/8 inches from eye to eye. I put some shocks off a lowrider on my wideglide that were 12 inches eye to eye, and they lowered the rear tip of my back fender exactly one inch. That doesn't make a lot of sense, but I have forgotten the pythagorean theorem from geometry class. Be careful of going to low. I had some White Bros lowering brackets on for a short while, and while riding two-up the rear fender would bump the rear break caliper. The white bros kit was also incompatible with the Harley chrome axle nut covers. If you have the money, the best option is the 11 1/2 inch Progressive 440 shocks.