the 7.5 rear end is the same between them only thing thatd be different between a ranger rear and a mustang rear is the mounting points, they had different rear suspensions.. thats all.. a 7.5 rear is a 7.5 rear no matter what ford car or truck it came from, the parts will interchange, even though you might be looking at different gear ratios and limited slip differentials rather than open ones
2003 3.8L V6 4R70W
Windstar Upper Intake with cool-air intake, MAC LT headers, BBK O/R H-pipe, and flow 40s, SCT tuner, FRPP Alum. D/S, 3.73 gears, Auburn HP limited slip, and Team Z LCAs, Eibach sway bars.
Best 1/4 time: 15.036 @90.92mph, 2.148 60'