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Let me know the casting # on the heads if you like, my book has lots of info on heads as well and I might be able to tell you if they are a good performance head. Hopefully they are a heavy design head and not the light weight design. Regardless though, you can always upgrade later if need be.
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Current Rides:
1971 Nova
2004 Tracker
2013 Sonic
Past Rides:
2007 G5
1984 Firebird
2000 Jimmy
1994 Jimmy
1990 Tracker
1985 Jimmy
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