Here are the motor specs from the Tritec site:

Engine Model	Otto cycle, 4-stroke gasoline
Induction	Forced - volumetric compressor Roots type Eaton M45 with intercooler
Layout	4 cylinders in line, 16 Valves
Displaceament (cc)	1598
Valvetrain Type, Drive & Layout	16 valves, SOHC, roller rockers with hydraulic tappets. Chain driven with hydraulic tensioner.
Bore x Stroke (mm)	77 x 85.8
Compression Ratio	8.3:1
Cylinder Blocks - Material	Grey Cast Iron
Cylinder Heads - Material	Aluminum alloy A319 - High Silicium Content
Fuel Delivery System	Multipoint Sequential Fuel Injection
Engine Management System	Siemens 2000
Valve Diameter (mm)	30.23 Intake 23.26 Exhaust
Maximum torque (Nm@rpm)	210@4000 (155 ft-lb)
Maximum Power Output (kW@rpm)	122@6000 (163 HP)
External dimensions LxWxH (mm)	615 x 565 x 675
Weight of engine (kg)	118

Additional web browsing reveals more about the motor, take it with a large grain of salt, as I am unsure of some of the sources:

• Eaton blower running about 16 psig boost.
• Forged steel crank.
• The stock flat top pistons, with an old-fashioned central dish, deck at 0.170" (!?!) in the hole.
• Max overbore is about 79mm (1667 cc without stroking).
• Stroking is not productive, because 130 mm rods give a relative poor rod:stroke ratio of 130/85 = 1.53 before you stroke.
• Motor typically redlines at about 7500.