Hydroboost
1990 – 95 (note differences in pedal rod hole size)
Flat mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 6” from mounting face (90-95)
Pedal rod hole size: ½” (90-93)
Pedal rod hole size: 5/8” (94-00)
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
1996 – 02
Angled mounting plate with studs that go thru the firewall.
Master cylinder: Mounting hole spacing 3 3/8
Pedal rod length: 7 1/2” from mounting face
Pedal rod hole size: 5/8”
Port H-boost - box 16mm-1.5 (Areoquip adapter FBM2608)
Port H-boost - pump 18mm-1.5 (Areoquip adapter FBM2609)
http://www.brakeandfrontend.com/operation-diagnosis-and-repair-of-hydro-boost-power-assist-systems/
http://www.vancopbs.com/category_s/114.htm