Hi, I was wondering if the normal stock radio in a GP sporting has connection ports on the back of it which will allow me to add more speakers without changing the radio. If not is there a way to fit more speakers amps and subs without changing the stock radio?

Cheers, Darren

I added a sub to ours, there are no additional connections i'm afraid.
I had to cut and tee into the existing speaker outputs on the back of the head unit. then run these high level outputs to the sub in the boot.

It's a faff about, and took me about 4 hours from start to finish, running cables under the plastic trim etc

cheers for the reply......think al look into how much it will cost for a pro to do it. If too much al attempt it myself.....thanks