I gotta 05 g35 sedan 6mt rev up ....I'm planning on getting the mrev2 but what else do I need ? Is a spacer needed also? And if so what size should I get ...keep in mind my engine is ALL STOCK....any on ur guys info would really help...thanks....

 

You do need a spacer. 5/16" helps better in the lower RPM range, 1/2" helps better in the upper RPM range. Since the rev-up is stronger up top, most go with the 5/16".