The cost involved with a 20g is not limited to the cost of the turbo alone. The whole setup is different. your intercooler pipes are no longer stock style. Coolant and oil lines need to be modified or changed. You probably want to go with an external wastegate setup on a 20g. Not to mention 20gs move more air. you probably need to reconsider your mas air situation. you'll need bigger injectors... should I go on?