Found here-

 

Thanks, I enjoyed that!

 

i saw a youtube clip that an Arden modified XJR had peddle shifter behind the steering wheel. what is that? an new transmission developed by Arden, I heard it was a sequential

 

The gearbox is the standard Merc unit, and as a few Merc's came with paddle/button shifts, Arden were able to create a set that worked in the Jag. Good luck if you can find one anywhere though, plus the price was very expensive. Not surprising though, everything Arden is expensive. The price we pay for modifying top end cars