Okay guys I have done my research, I am wanting to know if the 3inch ebay cat backs for the gst go under the rear sub frame like a apexi or greddy TI-C would....Anyone who has experience or input can help. Thanks

Ok so first off I just dropped my built 420 in my car. Some funny things that are going on that I cannot figure out.1. the car sounds cammed 2. it did have a low idle and wanted to stall(fixed) 3. when i try to drive it I push in the clutch and it wants to die( gets that low idle)Now I...