Hi, someone can tell me the stock compression value on a sunfire 1997 2.2 L Auto with 103 000 Km? Gm said after a visit to the dealer that I have 150 pounds on each cylinder(new head gasket due to an outside leak) . Since I am so noob mechanically I guess it's crap coz my car is soo slow...So if someone can give me more info on that. Sorry for my crappy english. Thanks. Oh and btw what's best for my crap? exhaust line or 2.4L swap? lol