eastern beaver only really has old style connectors like the ACV connectors and many found on 1st gens.
these connectors will work for 86-88 injectors(88 high impedence injectors you have to cut the locating lug off of the injector as well as the water thermosensor lug to make them fit properly):
airtex - 1p1000
GP sorenson - 800-9213
BWD(Borg Warner) - 27427
for the BAC valve you can use an S5 injector style clips found here:
http://kgparts.com/index.php?page=kgfuel
ND-IC, 3/4 down the page
for double sided connectors like the two 2 pin ACV connectors, it's easier just to go the the wrecking yards and pick up 2 and 3 pin connectors and cut off both sides and replace the whole thing(doesn't matter what connector you use or what car you got it from but i personally prefer the metri-pak connectors found on later model GM vehicles which are also readily available at connector stores).
and for reference, i have found that supra's of the same year range use many of the same tyco connectors as the later model RX7 such as S5 and S6 use. unfortunately they usually aren't in much better shape but they are easier to find in wrecking yards.
problem with the stock connectors is that many manufacturers require rediculously large orders who actually do have OEM connectors still for these harnesses.
i have spent a bit of time researching the connectors but with little success, you can also find some good info for later models RX7s in my thread here:
http://www.rx7club.com/showthread.ph...ock+connectors