I will add
Blast Racing Service USA.
Their Address is : 824 W.Southern Ave Orange, CA 92865
http://blastracing.blogspot.com/
Open at 10 am everyday except weekends. The owner Mr.Wakita is good with rotaries, and likes to work on them too. Pricing maybe a little on the higher side, but they are a larger shop, and you get what you pay for.
Not to mention they can do pretty much anything, machining, Power FC tuning, HKS F-CON V PRO Tuning (They are an HKS Pro-dealer).
They built a Turbo Rx8 a while back with a V PRO, making around 380-400 wheel horse, and it was a fun ride.
They also do a lot of custom work, Nissan Skyline GT-R, SR, VG, Toyota stuff too.