Hi, this is a street program for those who need to get the car up and running, cold start is flawless. Set up for GN1 heads and 218 cam on a 272 ci motor, 71 gtq, headers 93 octane fuel. However if you have a similar build just change the cubic inch size. This has not been tuned over 10 psi so use caution its just to get a combo cruising on the street.