Well its decision time again and I need to do it asap. Short and simple, with kelford 272s, springs and retainers, all supporting mod, would it be worth upgrading to the XL Green from my 05h 20g? I know the XL is better turbo, but is the gains worth the 1,100 bucks? I know its up to me, but what would you do? Looking for 400whp on pump, meth/water if need for knock.