We had my GT40s done over the winter. They were milled .020, which raised compression up to 9.35:1. We also had the 1.84 valves removed in favor of 1.94s. The car seems to run better, but we have no track times (Friday is the day!). All the work (which also included a 5 angle valve job) set us back $343.00, and included Ferrea valves. If you need any more info, feel free to email
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Michelle Wingard
1995 GT
GT-40 iron heads
E303 cam
Cobra Intake