before you sell it go down to the nearest decent hifi shop and look at the pioneer cdr-s80 the steering wheel remote that they supply it is a very good unit and using Mlords hijack software you can get it do more than the rio remote that is what i use.

Also see if there is an adapter to go from vectra steering wheel controls to a sony stick interface cause you might get the Mk2 and still have no easy way to convert wheel controls

If you are going to get a sony stick ensure you have somewhere to put it before making the jump to a Mk2

But the Mk2a has a few improvements over the mk1

Where in the country are you cause if it is in the far north ray smiths in aberdeen is very good and he knows a little bit about empegs