I found a excel that mention 200 SX se 1987, the 5Th ratio is different that on mk2 ratios said before:
1st 3.321
2nd 1.902
3rd 1.308
4th 1.000
5th 0.838 instead of 5th 0.759:1
Final gear ratio 4.111
Perhaps it's an american difference.
http://www.mediafire.com/?8ctjqadnujd
What do you think about it?