To anyone that may be interested:

I have been working with Kalmar Motorsport in the Czech Republic for two years and have been introducing gearsets and differentials into North America. We have several racers using these components already with great results. Everything is compatible with OEM gearcases.  

I use both the 6 speed gearset and the plated LSD myself.

Please contact me if you are interested in any of the parts on our product list:
http://www.peterkrally.com/kalmar-performance-parts.htm

Regards,

Peter Kocandrle