The 70mm isn't that bad but it is killing a little low end on your car right now, it will be more helpful with a another better flowing intake and defintly come into play with heads, I am upgrading to a 75mm since my car is more of a top end power maker, and with the 4:30's going in shortly, I don't think I'll have issues with bottom end
I replied to you PM, that above link works for me:confused
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[b]12.16 @ 113.5, 1.78 60ft..no traction in the 90 degree