Fuel injector/injection

My 2004 Lancer ES (only owner) came up with a cyl-2 misfire.
-Changed spark plugs/ wires
-Swapped the coil packs
-Replaced injector O-rings

Code still came up so I swapped the 2nd and 3ed fuel injector.
I'm now getting a cyl-3 misfire.


Went to the dealership, new injector is $280+.
Tech said "Off the record, you can probably get 4 aftermarket ones for that price"


Researched and looked up aftermarket fuel injectors, they seem to be rated in cc's and from what I understand they need to be blueprinted. I found stock ones but they're re-manufactured and i would prefer to go new.

I apologize if the answer to this is elsewhere on this site.

My question is: I believe my car is 2000cc's (2.0 sohc), does that mean i would need 4 50cc injectors?
If i get aftermarket injectors, would i need an aftermarket fuel rail and/or pump?
Not really sure what the best route is, if anybody could lend some insight that would be awesome.

I'm not looking for a performance fuel injection system but if the price is right I may upgrade.

THANK YOU!!!

Rockauto has new aftermarket ones for $118 - http://www.rockauto.com/catalog/x,carcode,1423011,parttype,6224