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