The Third Gen F-Body community uses these guys all the time:
Order fuel injector cleaning service on line and mail in to our Rockville Centre NY shop for fast turnaround. All auto and marine fuel injector cleaning. 516.442.4707
www.southbayfuelinjectors.com
I use these guys:
Fuel Injector Connection is the leader in high performance fuel injectors from top manufacturers including Bosch, Siemens, and Lucas.
fuelinjectorconnection.com
If the injectors you plan to get cleaned, etc. are just going to sit on a shelf, don't bother to have them cleaned. I would recommend having them serviced immediately before use. I've let cleaned injectors sit for +6 months only to have the injector become either plugged closed or stuck opened. Whatever lube/preservative that's run through the injector for shipping purposes is the culprit.
View attachment 120824
New spark plugs from the Camaro after injector swap - some are dry, some are soaked.
Fuel Injector Connection graciously sent me a set of replacement injectors
por gratis, along with a note that stated to install them ASAP.