Well, I'v been searching. If looked all over the web, and cannot find this part number anywhere. It must be some special limited edition injector.
I'v talked with a couple of companies who can clean and rebuild them, so that's what I'll probably do.
One company said they could thread any Delphi Injector. So I might end up replacing them all.
I'm not sure what the flow rate is on these. I used to think it was 32#. But I was surprised that 32# injectors would feed this engine - especially on alcohol. But they do. Once I removed them, I can see three holes at the bottom, all about 5/32" around. those are some big holes!
I have a race coming up in 10 days. I'm not sure I want to ship my injectors half way across the country, hoping to get them back in time. OTOH, I don't want to be racing with questionable injectors. If one dies, it will lean out a cylinder and burn a piston. Or if it floods, it could fill the cylinder with fuel = bad things happening.