What is a good upgrade injector for my stock 4age ?

Why would u upgrade the injectors on a stock engine? Will cause u to waste more gas and the engine to lose power...

Could always get the injectors tested & cleaned. Make them like new.

ya make sense on wasting fuel lol, I am just looking in buying new ones, I am going to buy new injector clips too. best bet I guess going to dealer and ask for stock injector...

Are you missing the injectors and clips? If it's a US 4A your best bet would probably be the junk yard but I would get them professionally cleaned before using them.