Hi smilertoo
It depends upon your choice I think.
Most should accept a connect 2 which is the additional interface to steering control. I apologise if I have the name wrong
You may also need to replace the facia to a 2 din and please be careful, as you need the facia with the passenger side airbag warning light fixings. You will also need the extension cable to extend the passenger side airbag light to new position.
Your Ariel will be a powered arial so you may need the power/arial adaptor, so you could have terrestrial as well as digital radio
If including a reverse camera, please remember you connect the red trigger wire to the black wire labelled back normally.
Many thanks
John