Wow, South Africa! Welcome. I guess one good thing about a niche car is that there are very little competing forums!? I'm going to assume you are new to car ownership as this is a very basic question.
Yes, you can connect or add an amp and sub or any combination to any car's factory radio. Just be sure the amp you are looking at has high level (aka speaker level) inputs. You are essentially taping into the an existing speaker wire for the input into the amp. I would advise you to do some more reading before you proceed and jump into an audio setup. Can start by reading some of the previous post here by our own members and dedicated car audio forums. Golden rule applies, you get what you pay for.
