you don't nessecarily have to use a 2.02 head, provided of course you have the nessecary airflow. AFR's page has a 1.90 valve 450 hp 331, but it uses a solid roller cam.
Anywhosit, if your after 375 rwhp, Your gonna need about 440 hp at the crank (assuming you are gonna lose something on the order of 18% through the drivetrain)
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2002 5M GT (99% stock)
1991 5M LX (30% stock)
patiently awaiting my satin silver 07 Mach 1, and don't forget the shaker
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