Quote Originally Posted by TheSaint View Post
the D16y8, D16z6/D16y1 and the JDM D15b engines all have the better ratios

http://hondaswap.com/reference-mater...n-specs-29132/

the stamping for the better ratios is S20 B000 for obd1 and S40 B000 for obd2
in saying that - the D16y5 also has S40 B000 stamp - but not the better ratios - so be careful

i have the JDM D15b S20 B000 box on my car and the ratios are fantastic
some of the JDM box's have factory LSD as well =)
y1 ratio's weren't as good as D15 ratio's however..