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Thread: Im lookin at purchasing an OS SPEED spec 1 engine
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Old 10-30-2008, 07:28 AM
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jman37
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Originally Posted by CraigM
If it's the magnesium head (red writing) order the aluminium one from the spec II. The magnesium one causes the tune to be inconsistent. Skyline pipe should be fine, when it gets worn go for the OS 1050 (1040 has been discontinued). The mugen pipe (cant think of the number) also matches the spec I very well but not the spec II which is revvier
Thanks, Will do. Do you know, off-hand, if the aluminum head for the spec II is a straight bolt on, or are there some mods needed..

Thanks again guys, the insight is invaluable to this nooby..

Jon
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