In Swindon tonight.

 

try passion ford

 

Found it on rsoc

Didn't do bad at all considering it haf 430bhp

 

If you got 338bhp in a classic(judging by your sig) then im guessing you should be as quick or quicker due to the weight difference.

My brother used to have a STi Version 4 running 340bhp(VF35, fmic, gems ecu) and come across a Aston Martin Vanquish S on the autobahn and upto 130mph the subaru was slightly quicker, but after 130mph, the Subaru seem to slow down where as the Aston Martin seem to pull away!!
Makes you realize how quick a slightly modded classic really is and with 340bhp there will not be many cars on the road which will surprise you!!

 

I'm pretty sure the rs is fwd. So side by side in my eyes it should do better... It didnt