A friend of mine sent me this link.

http://www.goopyperformance.com/

I would be skeptical of the apex seals
and rotor housing refurbishment but
some of the special tools look useful.

Good Apex seals are hard to make and must be
made from a special cast iron. Most after market
guys use steel which is real hard on rotor
housings.  Iannetti ceramic seals are the best.
Francesco Iannetti <iannetti@pop.mindspring.com>

Read this first before you risk your expensive
rotor housings.

http://www.rotaryeng.net/seals.html

Paul Lamar