Gears with 5 lug swap

The 5 lug conversion will not change anything else but wheel options and better brakes. as far as gears go the axles go into the spyder gears witch as long as you get the right spline, 28 or 31 you will be fine. all stock mustang i believe came with 28, might be wrong but thats what i have read. As far as the suspension goes, if the car is lowered you should be fine as long as you get the 94-95 stuff to keep the stock track. Since you have coilovers i think you might need to get 94-95 struts not sure, might want to see what other say that have done it. Hopefully i was some help