A lot of good information about final drives has been posted you-know-where:

Transmission - Final Drive, Gear Ratio
http://honda-tech.com/zerothread?id=746641
http://honda-tech.com/zerothread?id=164057
http://honda-tech.com/zerothread?id=154037

Transmission - Final Drive - My Car Is Faster Than Your Car
http://honda-tech.com/zerothread?id=49597
http://honda-tech.com/zerothread?id=104535
http://honda-tech.com/zerothread?id=99400
http://honda-tech.com/zerothread?id=106959
http://honda-tech.com/zerothread?id=88381
http://honda-tech.com/zerothread?id=81221
http://honda-tech.com/zerothread?id=76843
http://honda-tech.com/zerothread?id=127118
http://honda-tech.com/zerothread?id=326440
http://honda-tech.com/zerothread?id=388328
http://honda-tech.com/zerothread?id=423862

Transmission - Final Drive - Technical
http://honda-tech.com/zerothread?id=65698
http://honda-tech.com/zerothread?id=98809
http://honda-tech.com/zerothread?id=95093
http://honda-tech.com/zerothread?id=86185
http://honda-tech.com/zerothread?id=154654
http://honda-tech.com/zerothread?id=270819
http://honda-tech.com/zerothread?id=624931

Transmission - Final Drive - General
http://honda-tech.com/zerothread?id=54834
http://honda-tech.com/zerothread?id=62446
http://honda-tech.com/zerothread?id=754589
http://honda-tech.com/zerothread?id=241652
http://honda-tech.com/zerothread?id=95895
http://honda-tech.com/zerothread?id=87475
http://honda-tech.com/zerothread?id=80676
http://honda-tech.com/zerothread?id=71737
http://honda-tech.com/zerothread?id=132767
http://honda-tech.com/zerothread?id=120769
http://honda-tech.com/zerothread?id=133670
http://honda-tech.com/zerothread?id=698279
http://honda-tech.com/zerothread?id=523752

Transmission - Final Drive - Gas Mileage
http://honda-tech.com/zerothread?id=384089

Transmission - Final Drive - Other
http://honda-tech.com/zerothread?id=641533

Transmission - Final Drive - Reviews
http://honda-tech.com/zerothread?id=90310
http://honda-tech.com/zerothread?id=102379
http://honda-tech.com/zerothread?id=91196
http://honda-tech.com/zerothread?id=107134
http://honda-tech.com/zerothread?id=354337
http://honda-tech.com/zerothread?id=232253

Transmission - Final Drive - Part Numbers
http://honda-tech.com/zerothread?id=95247
http://honda-tech.com/zerothread?id=139892
http://honda-tech.com/zerothread?id=208041