ive got grahme goode set up myself your in my opinion better off having the uprated fuel pump and regulator as we all know what lack of fuel means when on boost BANG!!! melting pistons ect but its entirely up to you there is good reports to be heard about both companies.my deciding factor were that G.G.R. returned my email when i was asking what service they could supply and the fact that they have alot of history behind them (touring car)but thats just my reason.it runs constant boost of 20 psi but over bossts for overtaking ect to 26psi.
the change from standard to this is absolutly amazing.
Highly recommended im sure you ll be happy which ever you choose.