Hi Steve,
I have just replaced my Dash (one I specifically did for SVA). So now have it spare. If you can come and collect (looks like you are only 40 miles ish away!) it's yours for the price of the Sierra clocks (£15) or beer tokens...what ever. I have put a photo below. Like I said very simple, but all works fine, also have the Sierra dash connector to wire it up. If you are interested then PM me. Got me through SVA with no problems, should be fine for IVA...
Dash photo fitted to car...http://i556.photobucket.com/albums/ss5/terrybarker
Cheers
Terry