OP , I love my STS kit it cost me 7 large ( canadian) shipped to Canada. it's great , it's reliable makes good power ( 450 whp and 370 trq on 8.5 psi). STS treats me great as well. Now that being said, boosted performances kit is unreal it is more money but you'll be at the limits of the engine pretty damn quick due to how efficient it is. Looking back I don't regret going STS one bit , I can't even put the power to the road on 5 psi let alone 8.5. If I was you I'd look at either of these kits.
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