In all seriousness, modifying the 2.5 NA engine for more HP is an expensive proposition. Be happy with what you have and make small changes to the suspension that will still keep it road worthy, then flog it at the track. I'm a PCA instructor and you wouldn't believe the number of A students I have that drive stock 944s (with a few suspension tweeks and R compound rubber) like they have 250 HP under the hood.
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2008 997 C4S Silver, Kitty Cat, 1989 3.4 911 Silver Carrera, Erica, 1989 944S2 NASA GTS2, Iris, 1988 944 DE Car, Backdate 1975S to 1970s w 3.0 PMO - Roxanne, 1967 911 normal w 2.2s engine w S goodies, 89 VW Cabriolet - 2.0 conversion - sold and missed
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