Hi, Yes the engine changed a bit. still 588 ci. 12 to 1 comp. 740 roller 284 @ 50 ported factory alum. heads. flowed 415 @ .800 lift & 402 @ .500 lift. so good upper & lower #'s stage V intake ported 2 800 thunder series carbs..... thats the short list of it. I am very happy with the way the motor turned out.Just need to finish the car.I am working on it everyday.hoping to make it for the hemi shootout @ maryland international raceway in october.