Where is the factory bypass am on a SOHC?

[Neejay]

I know for the DOHC model there is a little cylinder underneath the driver's side rear speaker, but I dont have one (SOHC) and I havent been able to confirm where the factory amp is on a SOHC model.

Can anyone inform me on this, if SOHC even has one?

Thanks.

[projectRDM]

SOHC cars have the exact same setup, if there's no amp under the driver rear speaker then it doesn't have one at all.