Jeep's SJ platform was part of the "FSJ" or full-size Jeep lineup. A "FSJ" is any vehicle produced in North America, carrying the "Jeep" nameplate, with 2 or 4 doors, in rear- or four-wheel drive, whose wheelbase does not exceed 132 in (3,353 mm), nor is less than 109 in (2,769 mm), and whose tread width is no more than 67 in (1,702 mm) nor less than 57 in (1,448 mm).

SJ
A 1991 Jeep Grand Wagoneer
Overview
ManufacturerWillys-Overland Motors
Kaiser Jeep
American Motors
Chrysler
Production1962–1991
Body and chassis
ClassFull-Size SUV
Full-Size Pickup Truck
LayoutFront engine, rear-wheel drive / four-wheel drive
Body style(s)2-door SUV
2-door Pickup Truck
4-door SUV
VehiclesJeep Gladiator
Jeep J-Series
Jeep Cherokee
Jeep Wagoneer
Jeep M715
Jeep Grand Wagoneer
Powertrain
Engine(s)230 cu in (3.8 L) Tornado I6
232 cu in (3.8 L) AMC I6
258 cu in (4.2 L) AMC I6
327 cu in (5.4 L) AMC Vigilante V8
350 cu in (5.7 L) Buick Dauntless V8
360 cu in (5.9 L) AMC V8
401 cu in (6.6 L) AMC V8
Transmission(s)3-speed manual
4-speed manual
3-speed GM THM400 automatic
3-speed Chrysler A727 automatic
3-speed Chrysler A999 automatic
Dimensions
Wheelbase108.7 in (2,761 mm)
110 in (2,794 mm)
120 in (3,048 mm)
132 in (3,353 mm)
165 in (4,191 mm) (extended wheelbase chassis-campers)

This definition is known to include the following models:

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