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Youve got too many to choose from. What kind of budget are you talking about? Chances are theres only a 10 rwhp difference between the budget heads and some of the 2000+ heads, so it depends how much you really want to eek out.
If you get the Terminators, please post results. TSP said they've sold a bunch of them, but nobody seems to be willing to post results other than one car. I'd like to see enough to see a pattern of how they'll perform.
I asked this question to one of the TSP guys about my car. I have the original torquer in my car, very similar grind. They told me to go with the stg 2.5 5.3 heads.