ls6 intake
An Ms3 is a "top end screamer" and likes a lot of high air flow up above 5900, right where an ls6 falls on its face and right where a FAST intake shines..
I would highly recommend a used 90/90.. You can pick up a setup used for around 750$.. Well worth it. You will be looking at around a 25rwhp gain over the ls6 intake, for 450 more dollars, hard not to take that and you can also port it later for an additional 10-15 HP.
If it were me, I would save up 400$ or so, sell the ls6 for 300... Keep your eyes peeled for good deals, if you find one then jump on it.
But, if you have to have a power increase now, swap it on til you save the cash then sell it and buy a 90/90.
Up to you man.
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Race weight, suspension, 60', times you run now, DA you usually run in.. The car will definitely have it in it (power wise).. But the weight DA and 60' will play a big role in that.

