Replacement electrical connectors - Toyota Celica

So we just got our 94 Celica Lemons racer rebuild back in and a few of the plastic connector sockets have basically just disintegrated from age/heat. Some of these can be found on Rock Auto (alternator connector) but I can't find ones listed for the H20 sensors, fuel injectors, etc. Most of the JY ones I have found are the same brittle condition. Anyone had luck sourcing these?

Also, we've got a pretty good fuel leak behind the motor and I'm suspecting the injector o-rings. Any preferences on replacement injectors? I'm going to replace all 4 while I'm in there. I know I should have done on reassembly but I was not thinking properly...

You can always pick up some RadioShack plugs and solder them on. Of course, you are no longer plug & play in the case of any swaps in the future..

Just putting it out there.

Sounds like you'll have to hard-wire them.

Fuel injector connectors can usually be found on diyautotune.com sensor plugs are usually standard bosch stuff that can be found on cars all over the junkyards.

phoenixtuning.com has access to most of the toyota connectors brand new. They used to sell them separately, not sure if they still do.