The hamburger emblems that are stock on the 370Z fit into a unique indentation on each bumper (different sizes F/R) and does not match any previous Z emblem iteration. Your best bet is probably to modify/shave the bumper to fit the emblem you want.
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2011 370Z 6MT Sport Gun Metallic | ARC | CJM | Ecutek | FI | Fujimura | R2C | SPL | Stillen | TWM | Z1 | ZSpeed | |