2.4L turbocharged DOHC I-4 (Dodge Caliber SRT4)

285 hp/265 lb.-ft.

+ Solid design, good numbers

- Held back by base-engine liabilities

= Amazing upgrade of a weak base engine

4.7L SOHC V-8 (Jeep Grand Cherokee)

305 hp/334 lb.-ft.

+ Huge power bump

- Why not just get the Hemi?

= Never quite impressed

5.7L OHV Hemi V-8 (Chrysler 300C)

340 hp/390 lb.-ft.

+ Way more refined than you expect

- Last of the Mohicans?

= Lives up to the name