That's not an aluminum dampener. Looks to be the stock 370Z dampener.
Personally I've never had an issue with any Nissan pulley. My M18 Milwaukee takes it off in 2 seconds and you don't even need a pulley puller. Just wiggle the thing back and forth and it slides out. Done it this way on over 50+ VQs in the past 5-6 years.
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Creator of the GTR TT Conversion Kit, NA Record Holder (401WHP)
Ecutek Master Tuner (VQ37, VR30, VR38, B58, S55, S58)
BTWTuning
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