injectors

How can I tell what size injectors are on my motor?

Just guessing but i think your motor has either 19lb or 22lb injectors.

Modifications have been made to my car and Im trying to figure out all that was done. Im pretty sure it has a upgraded cam in it because it revs real quick and throttle response is high. Probably not a very large cam though just a mild upgrade. I just wanna know if the injectors were upgraded. I believe #22 were stock in 92. Im thinking some nice 24 or 26's maybe 28s would be a nice upgrade.

part numbers tell all.