Great link and great info there...
IMHO, I'd rather clean what I have rather than installing someone eles's potentially dirty injectors...
A dirty trick I did to poor running Chev I picked up was to reverse flow the injectors to blow the filters debris from them after something dissolved in the tank.
In short you need a high pressure storage tank, shop air, some good quality hose to connect to the outside of the injector sealing the spray nozzle to the hose and preferably a none flammable cleaner. Oh the tank needs a feed off the bottom so when pressure is applied the cleaning agent is fed into the injector via regulated shop air (80psi in this case). Pressured it to 80 PSI, applied 12vdc to injector, and walla - reverse flow occurs. A bulk of the crap stuck in the filters of each injector came out. Lets just say it was good enough that it ran great and was treated with Techron fuel injector cleaner. It never had a problem!
I'm not saying this is the best path here but sometimes there are options. . . Even Air and 12v can remove large chunks. . . Just don't blow parts across the room. Hold the injector in a clean white towel over a garbage can with a fresh white bag in it. keeping in mind that you MAY damage the injector so don't blame me! And don't exceed the OEM fuel pressure. START LOW and go up to the max. Sometimes even the lowest pressure will push stuff out.