Not that I really can show you but the Dodge Nitro with the 4.0 is over-engineered (engine, transmission and rear-end) unlike the 3.7 engine and drive train). So are you thinking about adding what? Nitrous oxide (N2O)? Sure the 4X4 Transfer Case would be a weak part, otherwise maybe the drive shaft. What are your plans?
4.0-liter SOHC V-6
The performance-oriented, 4.0-liter single-overhead-cam (SOHC) V-6 engine that is standard on the Dodge Nitro R/T model is designed to provide the power and torque required to make the vehicle a leader in the mid-size SUV segment. The engine delivers 260 hp (194 kW) @ 6,000 rpm and 265 lb.-ft. (359 N•m) of torque @ 4,200 rpm. The 4.0-liter SOHC V-6 engine provides more power and torque than the 3.5-liter engine on which it is based with an emphasis on low- and mid-range operation to meet the needs of the day-to-day driver.
TRANSMISSION: W5A580 – AUTOMATIC FIVE-SPEED OVERDRIVE
Availability Standard on 4.0-liter SOHC V-6
Description Adaptive electronic control, electronically modulated torque
Axle 3.21 with 4.0-liter SOHC V-6
Overall Top-gear 2.66 with 4.0-liter SOHC V-6
Transfer Case: MP 143 GII Single-Speed
Availability Included on 4WD
Type Part-time, electronically shifted
Operating Ranges 2WD, 4WD lock, electronically controlled
Center Differential Type None
Torque Split, F/R 50/50
AXLE ASSEMBLY. Rear Complete.
Part Number: 68083032AA
Nitro Year: 2007 (1 of 91,815 sold in 07)
Nitro Model: R/T 4X4 Stone White
CAT-BACK Exhaust, CAI, Projector Head Lamps
Fully-Equipped w/all factory options