| I helped tt.net member Xzeler8 install them and man it was a PITA.  I hope I never have to do that again. :) The gain wasn't all that impressive either.  The N/A engines on these cars don't respond well to mods. (That is, the mods are $$$$ and don't get you much, with the exception of maybe the UR pulley and the Pop Charger) 
Currently Owned Z's:1991 Platinum Mist Metallic "Project Car" 5spd 170k miles
 Previously Owned Z's:
 2004 350z Enthusiast model, 6 spd, stock. 4k miles R.I.P.
 1993 300zx TT Stock 141k Miles (parts car)
 1994 300zx TT Stage I+ 52k Miles
 1990 300zx NA Stage VII+ 55k miles
 1990 300zx TT Stage II+ 89k miles
 Yes, this really happened...so I took a pict.
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