like it says are there any racing heads for the eco???
theres the
GM Performance Parts Race Head and mild ported head
I'm not sure if any are suitable for street use..
you could also get a spare head or pop yours off and have it Ported & Polished....
ask 03 Cav Fire about that...
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<img src="http://www.j-body.org/registry/pokitrokit2000/elguapo3.jpg">