I am not exactly sure what sleds it fits but here is what Silber web site indicates:
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Polaris Silber Turbo Kit
2008 - 2010 Polaris Turbo Kit (Dragon, Rmk, Iq’s Assaults, Switchbacks) 800’s 700’s 600’s
This Turbo kit will allow you to run boost levels from 7-18psi of boost. We offer a low 3 psi waste gate for user looking to run lower boost levels, this is perfect for low elevations and running pump gas. Hp ranges depends on altitude and boost level which can range from 160 hp to 250+ hp. This turbo kit has very minimal turbo lag when used with our recommended clutch kit.
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On his web site it apears he offers 2 kits - 1 for the 700 and another for the 800. Not sure about the 600.