gt40p vs gt40 irons

schiccc

New Member
Feb 1, 2004
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i have gt40p heads now and just bought a low mileage set of gt40 irons that are angle milled light bowl work and completly gasket matched to a set of header and intake gaskets, and mild exhaust work too.should i except a good increase in hp and which head comes with better springs.
 
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