I've got a standard 2007 GTI (non ed30), I have (to be fitted) WALK, whiteline ARBs, Twintake & SS exhaust, I'm looking to go to stage 1 possibly 2, what would be my best option? I want reliabilty more than anything else, whats the best performance upgrade to go for? I live in Swindon so really want to go somewhere fairly local. help appreciated!