Rusty,
What color are the
850’s.  Both primary and secondary injectors in my j-spec 20B are a
deep red/crimson color.  I think it is a ’93, but I’m not
sure.  You’re probably right on the 3rd gen 13b’s
having 850 cc secondary injectors.  
 
Mark 
   
 
The primary injectors on my 20B are, what –
purplish red? (I haven’t seen them in awhile, the cowl is on), and RC
engineering measured all three 570 CC/min.  I presume these are what Mazda
calls 550s.  At a BSFC of 0.6 (high power mixture); 4 of these should be
good to about 300 hp at 80% duty cycle.
 
Al