I'm an early adopter of Robert's EFII system. The throttle body I have is a Summit Racing part # SUM 227203. I tried looking it up on their website but I can't find it. Going by memory it is a 60MM bore--which is a little large for my 320. Robert may have a different supplier now.
Thanks for the info... I planning go with EFII. But I want to find the throttle body so I can make a 3D model and start create airbox/filter/cable etc.
I used an airbox from a 1987 Nissan Stanza for my 9A. I modified the air intake to work by having an aluminum tube welded to a plate that bolts in place of the original elbow.