Hey Mike, thanks for that link. Very interesting information. If any of you other guys are fairly new to car building like me, I would recomend checking out that site. Very useful!
Cheers, Shane.

check the howstuffworks.com site here is a link to the diff section

http://auto.howstuffworks.com/differential.htm

Then using the table of contents look at how a clutch diff works then the torsen this will help explain the differences between the two.

I have one of topgear's units however I have not installed it yet - too many other things to do at this point in time.

Did the TRX Bluebird have a lsd?

have a look here and give topgear a pm .... he may still have a couple

Hi there, I need a lsd for my H165 diff but I'm not sure which way to go or where to get one. I've seen the torsen style ones that Topgear is making and they look awesome but I don't know if a clutch pack style lsd would be better for what I want to do. I plan to do club racing, (hillclimbs, etc.) with the car as well as limited road use. Could someone please explain a bit about each style of lsd, how they work, maybe some pros & cons?
Thanks for any help you guys can give!
Cheers, Shane.