anyone know where i can get some Injectors for a good price??? also can you tell me if the injectors are top feed or side feed for a fd???

 

sidefeed
You could:
enlarge your sec to 1000 - 1300cc's...rx7store
Get two 850 cc sec and change your primaries (550cc)...Rotary Performance
or do both. You'll need to do some grinding on the primary fuel rail to stick the 850cc's in there.
But you better have a Haltech or PFC

 

i dont reccomend running larger primaries unless you are running a CRAZY setup...like a T-88 or T51-R. larger primaries will make your car run rich at idle/low rpms, even with good tuning.

 

unless you have some hardcore mods, stick with the stock injectors.
either send your old ones out to RC, or buy some new ones.

RX-7 Store (link above) is as good of a place as any