Wade pretty much summed it up.
Are you sure that more RPM's is what you need? Have you have it on a dyno to see "where" you are making power? When I dyno'd mine I was a little surprised to see that HP dropped off dramatically after 6000 and peak HP came at 5300 rpms! Just something to think about.
Take it easy,
E
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1991 5.0 LX Coupe - 40,750 miles
331 cu. in. / Tremec 3550 / BFG Drag Radials
12.22 @ 114.31 mph - w/1.89 60'
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