| I think that if you are looking to buy a 1pc driveshaft for performance gains, look elsewhere. It isn't all that much lighter than stock, but you will notice a difference. (Not like a UD pulley or lightweight flywheel, but you'll notice). If you needed to replace your driveshaft (2pc) due to failing yolks (yokes?) or the CSB, then I would buy it. I have absolutely ZERO complaints with it though. I've had it in excess of 120mph a few times just to test it on the hiway for vibrations and have yet to feel any. I have solid motor and trans mounts if it makes a difference. I'm not trying to say "don't get it" (because that's not what I"m saying), I'm just saying that unless it's convenient (like you're replacing the clutch and therefore the trans must be lowered) or something else, then the $$$ would best be spent elsewhere. I love mine, and I don't regret buying it, but I just replaced mine because 1.) the CSB bearing was shot, and 2.) the trans AND diff were already out during my buildup.
Current Z's: 1991 Platinum Mist Metallic "Project" 5spd 170k miles Previous 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
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