help with RC 550cc injectors

[90DSMTurboFWD]

OK Well I decided to take the time today to order some O-rings for my used 550s. So i took the fuel rail off and popped out my first injector when I noticed that the RC's were missing something. This is going to be hard to describe so bear with me:

It is at the top of the injector, and it is one of those plastic round ...things. I cant think of a better term. There is two of them and you are supposed to put the new O-ring in the center of them, and slide that into the rail. I am missing 3 of this plastic 'things' I tried the auto store and they didnt have anything like it. Does anyone know where I might be able to get those? I was thinking maybe a stock car uses those types of fittings?

Sorry for the broad description but I am stumped

 

[91awd]

It sounds like you are talking about the little plastic spacers? If so you should probably go to a dealer maybe a junk yard but they don't usually have the engines in them.

 

[90DSMTurboFWD]

yeah I am talking about those. problem is that it isnt a stock part and the stock injectors dont have the plastic spacers.