i have a 89 iroc-z with a 90 vette 350 tpi and a 5-speed. it has hooker headers and edelbrock upper and lower tpi intake. full flowmaster catback. i just got the car it only has 56,000 miles on it. im new to this camaro thing so any help would be great. im looking to change to a bigger cam, but i need to know how big of lift i can go with stock springs. please get back with any answers thanks.