Farina Racers are a small tuning shop.
Don't have much info on them yet - no web-site but I the Hyper Rev Skyline No.2 has a 0-400m shoot-out and a Farina twin 20g 32 beats Jun, Trust, Mines etc to the fastest time.
I think they are still going as a google search found an R34 on the A-T-S website and a drag 33 on some Autosalonsite.
http://www.a-t-s.co.jp/atshtml/farina.htm
http://response.jp/event/auto-salon/html/4537.html