If you are using a engine computer from a vehicle that has a different vin than the engine you are using it on then you will need to first have the computer flashed for a stock application to load the correct vin in the computer. Once this is done we will modify the program with the street rod application programing. Total cost for both services together is $150.00 when the vin needs to be changed. You will need to purchase both items below. Please email us if you have questions. Thank you for shopping Nordstroms.