You really should check this kind of thing out before you buy.
1st off, if it came with rotors they will not fit, 9" axles never used a 4.5" pattern.
2nd thing, what rotor will you use? What size are Ranger 4x4 front rotors (diameter) or a jeep front rotor with a compatable bolt pattern and thickness?
And lastly, its a nice start to a 9" rear conversion........