Headunit Query!?!?

Hi guys , and girls.

iv been sludging through the search engine on here and im still a little bit confused.

Here goes.....

Iv got a 54plate (the one with the bigger grill) which has a Bose Concert headunit. i want to put a couple of subs and couple of amps in the boot. Can i do this using the standard headunit?? i want to keep my dash simple and original, and id like to keep the steering wheel controls too. Plus the wife will be happier with the standard headunit when shes happy, im happy

Is this possible?

kind Regards
Chris

thanks mate. Right now my next question is, do you know what the converter was called that your friend used?

il give it a go with the standard headunit first then.

i doubt il be selling it even if i do put an aftermarket one in because i always put my cars back to standard before selling. but il give you a shout if i do sell it