I have an ARC in my Z670 stock, and it has different and bigger structural brackets you may need to install. Almost all the force of the suspension is on the front arm and it is mounted higher on the tunnel than say your C-7. I'm actually planning on putting a long track in mine, but still researching the feasibility, so if you're in the market for buying an ARC, let me know. If I do swap for the long track I'll probably post the suspension in the classifieds.
If you do go with the ARC, and you weigh over 180 Lbs, you may want to consider the AD Boivin spring kit. Try it first, but if you bottom hard at speed and feel like you're on a pogo stick, the spring kit will help.
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