you can get a 3.9 from a Z i believe
ca18 had 4.3
ive also seen skyline tranny internal in sr w/ a 4.6 gear ratio, but that's because of the tranny guys
stock is 4.1 or 4.0..i forget
4.3-faster accelleration-lower top speed
3.9 slower accelleration-higher top speed..
you get the point..
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