I had AMS (all 3) on my 350Z with no issues what so ever so about 70k! they were excellent quality. I also know of a few others than ran just the crank UR and had no issues. I'm reluctant to buy stillen altogether, just because of all the stuff i have heard over the years, but i would think its hard to mess up a pulley. On the 370Z am going AMS needless to say, my next choice would be UR and lastly, stillen. Good Luck man
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09 GT-R
12' 370Z 7AT HANDED DOWN
12'+13' 5.0 SOLD
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