I'll have to get back to everyone on the RX7 injectors (this includes the people that pm'd me). Basically I'll need to make sure these side feeds are all ok to go in (they're still in the post), and once I confirm that they're all good I'll sell the RX7 injectors. They haven't been run in my car, but they came out of an RB20 and they were fine. They were also flow tested and cleaned last week and they are all good (all flowing pretty much spot on 540cc).
The only reason I decided to get the side feeds was out of convenience (and because the price was right ). I still haven't bought the wiring connectors for the RX7 injectors (they are $30 for a set of 6 from a wrecker). You'll also need 2 bolts which I don't have to mount it and some washers to space it out a bit.
Anyway as I said I'll get back to everyone on them. I'll have to ask a bit more than $500 though because they owe me a fair bit more than $500 so far including the fuel rail and cleaning and flowtesting (over $650 actually). I'm prepared to lose a bit on them though (for something I've never used, talk about bad investment!), so the asking price will be somewhere between $500 and $650