Photo courtesy J.D. Ellis

Chassis: FABCAR FDSC/03
Wheelbase: 110.0 inches
Width: 78.5 inches
Length: 180.0 inches
Height: 42.0 inches
Weight: 2125-2200 pounds (varies with engine config.)
Fuel Cell: 24 Gallons
Wheels: BBS 3 Piece/Fikse 3 Piece
Front: 11.5" x 18"
Rear: 12.5" x 18"

Tires: Hoosier
Front: 11.5" x 25.5"
Rear: 12" x 28"
Chassis:  Mild steel frame,with aluminum and aluminum honeycomb stressed panels bonded and riveted to the structure.   Integrated roll cage fabricated from 1.75 x .090 wall DOM tubing.  Removable aluminum honeycomb front radiator mount.                          
Brakes:  Up to 14" with 6 Piston Caliper (No exotic materials) 

BMW S62-B50 32 valve 5.0L V-8
Bore: 3.701″ Stroke: 3.502″ Minimum crank weight: 40 lbs
Maximum compression ratio: 11:1
Intake valve: 1.377″ Exhaust valve: 1.200″
Piston, rings, pin and titanium connecting rod: 936 gm minimum
Maximum camshaft lift @ retainer with zero lash: .445″
Maximum cam duration: 250 ° @ .050″ lift
Induction: 8 individual butterflies @ 1.965″
Must use twin intake air restrictors of 1.875 inch diameter opening into the approved air box
RPM limit: 6800

LEXUS (TRD) 4.3L V8
Bore : 3.545″ Stroke: 3.300″ Minimum crank weight: 45 lbs
Maximum compression ratio: 11:1
Intake valve: 1.356″ Exhaust valve: 1.147″
Piston w/rings, pin and connecting rod: 1053 gm minimum
Maximum camshaft lift @ retainer with zero lash: .478″
Maximum cam duration: 260° @.050″ lift
Rons 4 hole throttle body with 1.875″ diameter butterflies.
Intake manifold TRD (as approved)
RPM limit: 8100

Photo courtesy J.D. Ellis

PORSCHE 3.99L GT3R Flat 6

Displacement up to 3.99L, unlimited components

Current Porsche engine used until 05 season:                               
 Engine: Grand Am Approved  Six-cylinder Boxter: 3598 cc     
76.4 mm stroke 99.99 mm bore
Horsepower: 470 @ 7500 rpm 
Torque: 420 n/meter @ 7500 rpm 
Max rpm: 8500