hello everyone..just purchaced my 04 this week first one in nearly 40 years been a chevy guy mostly thought i would try something new,fist question is about tuners dont know which one to buy diablo or sct also need to know about superchargers i have a paxton novi 1000 on the car now ihave been told there is some maintenance involved -what kind of oil is used -what level is it at -how to check it- thanks