I have a new set up with the new g35 900 on my built 25 and was getting bad boost creap on my 50mm gate,.was told a 60mm gate would control it but the problem is they are a big gate and you will run into problems fitting it into the area, ac lines get in the way, dump gets in the way, ABS bracket gets in the way you get my drift, my point is you can be up for some big money just to fabricate it to fit, but the 50mm you wont have any problems.