a T66 adn a T67 are two completely different beasts altogether.
do you even have a car yet?
why don't you drive your 240sx over to Secret Services in the new year, we'll show you in person what you can do to your ride to make it fast.
My suggestions.
Buy a swap. put it in, or have us install it for you. THEN start thinking about making power.
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Advocate for the People's Republic of Awesome
rest in peace tim.