Hi and welcome along buddy. There are loads of people who just replace the head unit with something more up to date really. It depends on what you want really. Nice looking Zed also.
Hi and welcome along buddy. Having taken a look at the car it looks quite nice. Roof replaced and exhaust so there shouldn’t be any issues there for a while. It looks a tidy car. As for the stereo it could be a number of things really. But easily replaced quite cheaply if needed.
First of all hi and welcome. As above check how the car has been looked after and service history after the fitting of the goodies. if its been well looked after then go for it. if it hasn't the avoid like the plague.
I actually went on youtube afterwards and did a search for this, I didn't find a specifil video but found a couple of useful video's to watch. Thanks for the reply though.