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I have the ATS Triple Plate Clutch/Flywheel Combo and know where your coming from, this clutch is great for the track and maybe street driving if you can put up with the noise and chatter, it drives like stock in regards to the pedal pressure and engages smoothly while not in stop go traffic but can be a bit grabby when hot ie in heavy stop go traffic. The main problem is the weight of this combo for daily driving or the lack of weight, it's too light great for track or high spirited driving. The chatter is the main problem for me, it's right in the daily driving rpm range for cruising around ie 2000 - 2500rpm in 4th 5th and 6th so unless you are above this or accelerating hard it causes chatter in this range, so on a light to medium thottle with the engine near or below this rpm range and on load ie: climbing a small hill, I have to drop it down a cog or two to bring the rpm above 2500rpm. You may think its a small price to pay for a high performance clutch but it does spoil the driving/cruising pleasure that the 350Z is (I don't drive like I've stolen it all the time). Anyway ATS has seen fit to fix this problem with a heavy flywheel option with it's weight closer to the stock flywheel's weight (4.4lbs lighter than stock) and will be available sometime in May 05 which I'll be trying before giving this setup the flick. If your keeping your power below 400whp then I think the Nismo or Jun flywheel with the JWT or ACT clutch is the way to go for a daily drive up to this power range plus I think above this power the Exedy carbon twin would be a better bet than the ATS, it's has dampen friction plates.
Cheers :shiftdrive: