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Why not do a roush drive snout conversion on your whipple then you can crank up your boost even higher. Another option is get a roush I/C intake manifold and put a whipple 3.4 for the lightning on it with the GT 500 rear plenum and TB.
Don't get me wrong, I'm not trying to talk you out of putting a gt 500 motor in your truck, I'm just trying to come up with some viable options so you can keep your current engine.
BTW do you still have the stock internals on your truck? How much boost do you have with the 2.75 pulley?
Last edited by 05RedFX4; 06-14-2009 at 12:34 PM.
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