Hi welcome to the club.
Gary Moulson at Keith Michaels is yer man - he posts on SIDC & ScoobyNet as Moley_WRX. He owns a Subaru so he knows all the mods etc.
He CAN be a bit dificult to get hold of sometimes, but it's worth persevering.
He's contactable on 0845 0138231 or 0208 6427868.