It's always good to have a solid base for comparison as you upgrade.

Vehicle Weight (RS): ~3220
Vehicle Weight (BASE): ~3265
Vehicle Weight (MR): ~3285
Vehicle Weight (SSL): ~3350

HP: 232 @ 19 PSI
TQ: 239 @ 19 PSI
1/4 Mile: 12.9 @ 107

Wheel Weight (Enkei VIII): 20.5
Wheel Weight (Enkei IX): 20.1
Wheel Weight (BBS): 17.7
Rotor (Front): 21.6
Rotor (Rear): 14.45
Caliper (Front): 10.5
Caliper (Rear): 3.5
Lug Nuts (All 20): 2.75

Front Strut Bar: 8
Bumper Beam (Front): 13
Bumper Beam (Rear): 17
Hood: 20.2
Trunk (Without Wing): 22.5
Wing: 7
Glass (Windshield): 24
Glass (Rear): 13.5
Glass (Rear Door): 6
Glass (Front Door): ???

Wiper Motor & Arms (Front): 7.7
Wiper Motor & Arm (Rear): 3
Wiper Fluid Tank: 8.3 Battery: 37
E-Brake Assembly: 9.8
Spare Tire, Jack & Tool: 37
Trunk Carpet & Lining: 4
Speaker: 2
Radio: 3
Steering Wheel (Without Airbag): 4.6
Airbag (Driver): 5
Airbag (Passenger): 7.3

Seat Weight (Front Cloth): 37
Seat Weight (Rear Cloth Upper): 14.2
Seat Weight (Rear Cloth Lower): 9.4
Seat Belts, Mounts & Bolts (Front): 10
Seat Belts, Mounts & Bolts (Rear): 10
Floor Mats: 5
Sound Deadening (Firewall Mat): 14.3
Sound Deadening (Black Tar): 11

Full Exhaust: 32
Cat-Back Exhaust: 16.5
Axle-Back Exhaust: 19
Catalytic Converter: 10.5
Downpipe: 10.5
Exhaust Manifold: 12

Intercooler: 10.8
Radiator: 9.7
Radiator Fan: 8.1
A/C Compressor & Condenser: 29.6
A/C Fan: 6.4
A/C Bracket: 4
A/C Compressor: 14.1
A/C Condenser & Lines: 9.8
EVAP Canister: 9

Driveshaft with Carriers: 38
Rear Differential Brackets: 8
Front Cross Member: 9.4
Rear Mustache Bar: 15.9
Rear Transmission Bracket: 2
Intake Manifold: 7
Transmission Mount: 3.7
Cam Gear Motor Mount: 4.3

Coolant Overflow With Hose: .65
Front Wheel Bearing (Without Studs): 6.9
Rear Wheel Bearing (Without Studs): 6.7
Front Wheel Spindle: 10.8