if you seriusly no nothing about boosting a car then your very first concern should be to learn about it. Go to www.homemadeturbo.com and start reading all the FAQs and beginner guides, it will answer ALOT of your questions and help you choose a good set up for your desires.

To run 20psi of the motor is gonna need alot of work and that should not be a daily ran setting because thats gonna cause some issues regardless of how well the motor is built