The Bellhousing mount R4 features 1.2" thick scavenge rotors with a 1.4" high volume pressure rotor to supply oil to even the most demanding motor. Larger 1.4" thick scavenge rotors can be installed to run higher vacuum. Rear drive for powersteering pumps or combo powersteering/fuel pumps comes standard. Use PET14-0700 mount blades for mounting to the bellhousing.Single Ret, HV Press, RD