Those 4 mods together are probably worth about 20 peak hp at the wheels, but as much as 35-40 hp at other points in your rpm band.
My exhaust recommendations:
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In Austin, Leonard's Muffler Shop on Jamestown and 183, behind the Discount Tire. Tell them I sent you (the guy with the supercharged black explorer, as they might not remember my name) and they might give you $10-20 off. They're great, and usually have you out in about 1.5 hours.
I don't have a body lift (why does everyone think that?) But if you want help with it maybe you can drive down to Houston or Victoria and arrange a wrenching party.
The BBK part of my intake, other than the TB, is the large chrome intake tube that relocates the intake tract to feed the supercharger.
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