year - engine -      HP  @  rpm  -   torque  @  rpm
- ----------------------------------------------------
83 - J10 4.2L   - 115 hp @ 3,200 - 210 ft lbs @ 1,800  <-- current
83 - 300SD 3.0L - 125 hp @ 4,350 - 170 ft lbs @ 2,400  <-- the benz
83 - J10 360V8  - 129 hp @ 3,700 - 245 ft lbs @ 1,600  <-- Old Blue
88 - XJ 4.0L    - 177 hp @ 4,500 - 224 ft lbs @ 2,500  <-- little wag
91 - XJ 4.0L    - 190 hp @ 4,750 - 225 ft lbs @ 4,000  <-- first choice ???
97 - ZJ 5.2L    - 220 hp @ 4,400 - 300 ft lbs @ 3,200  <-- whit's motor
97 - ZJ 4.0L    - 185 hp @ 4,600 - 220 ft lbs @ 2,400
78 - SJ 401V8   - 215 hp @ 4,400 - 320 ft lbs @ 2,800
88 - GM 6.2L Dsl- 130 hp @ 3,600 - 240 ft lbs @ 2,000
88 - GM 350V8-FI- 210 hp @ 4,000 - 300 ft lbs @ 2,800
89 - Ford 302-FI- 185 hp @ 3,400 - 270 ft lbs @ 2,400
83 - 240D 2.4L  -  72 hp @ 4,400 -  97 ft lbs @ 2,400     :)