M23

I'm looking to get this ATS Carbon LSD and wonder where I can find the best price? also the parts I'll need for installation? Are the stub axles the only parts I need?

Thanks for your help guys

Z1 Performance

iTrader: (564)

what spec car is it going into?

M23

03 6MT track pack, getting the 3.9 final drive too.

Debating between Cusco and ATS...

Thanks

Sharif@Forged

iTrader: (92)

With a track model, you will not need stub axles or anything extra. Most people will also purchase a pair of OEM bearings/races, since you will likely damage your original ones if you try to remove and reuse them.

We have one in stock....$1299 shipped. http://www.forgedperformance.com/sto...5&cat=0&page=1

Z1 Performance

iTrader: (564)

I dont think you can use the ATS with 3.9...not as a drop in setup at least.

Sharif@Forged

iTrader: (92)

The Evo gears were used by a customer of mine, so I am assuming that the Central 21 gears would work as well. The diff will be more sensative to initial trq, so definately use the ATS oil...at least for the first couple oil changes.

Z1 Performance

iTrader: (564)

good to know!

M23

oh! will Cusco RS be better to pair up with the central 20 3.9 final drive?
how can I confirm the 3.9 gears will work with either ATS or Cusco?

Thanks!!

Z1 Performance

iTrader: (564)

works perfectly with the Cusco without needing to get anything else, that I know

M23

Great! I might just go with Cusco....since cheaper : )
Cusco RS is not that nosiy right? I track the car quite a lot, is 60% good enough? I'm afraid 80% lock will be too rough?

Thanks for the great help

Sharif@Forged

iTrader: (92)

The ATS and Cusco have identical ring gear shelf heights. Their dimensions are identical. So if something will work on the Cusco, it will work on the ATS.

When the Cusco is stacked at 60% lock, it probably wont grab as much with the 3.9 ring gear. The ATS will be a little bit grabbier with the 3.9, since its 100% lock , but with carbon discs, and their oil, it works fine.

Either diff will suit you with 3.9 gears.

M23

Thanks for the great info
so I guess I should have the Cusco set at 80% to go with the 3.9FD

or get the ATS...hard to choose!!

Z1 Performance

iTrader: (564)

I'd still recommend it at 60% lockup for street and anything but all out long track use. I've had the 3.9 and Cusco diff in my own car now for nearly 2 years, and it's worked perfectly