Outer Limits 4x4 Board

Hey guys, have run into a spot of bother. I need certain specifications on hilux diffs/ratios, vehicle mass, and engine power/torque for purposes of engineering my zook. Any help would be much appreciated.

Q1. What year models are the rear diffs with drum brakes, 4.8 ratio, centered pumpkin and the front diffs with disc brakes, 4.8 ratio, offset pumpkin?

Q2. What is the vehicle mass for these year model hiluxs?

Q3. What are the engine specifications for these model hiluxs (specifically power/torque?

Again any help will be appreciated. . .
Thanks Tom

well they would be yn65 model hilux diff from the sounds of it, so that will be running a 4y toyota motor.

Make TOYOTA
Family HILUX
Model Variant 4x4
Car Series YN67
Year 1985
Doors and Body Style X CAB P/UP
Engine Size 2.2 litres (2237 cc)
Fuel System CARB
Cylinders 4
Driven Wheels 4WD
Standard Transmission 5M4x4
Bore and Stroke 91x86 mm
Power 69 kW
Torque 179 Nm
Weight to Power Ratio 20.65 : 1 (kg/kW)
Front Brakes DV
Rear Brakes DR
Wheel Dimension 205Rx16C
Turning Circle 13.6 m
Compression Ratio 8.8
Final Ratio 4.875
Front Track 1430 mm
Rear Track 1410 mm
Wheel Base 2840 mm
Kerb Weight 1425 kg
Ground Clearance 205 mm
Towing Capacity 1400 kg

thanks for the quick reply and the help. If anyone else has anymore input or comments the help is appreciated. . . Tom