Will the stock SS/SC Injectors fit an ls?
What would be the difference of them over my stock ones

 

you cant tune for them. yet...

 

Yup. There are no gains with an injector swap. You only need them when your old ones are maxxed out. If you aren't at that point yet, there is no need. And considering that it takes full bolt ons and tuning to get the 2.4 to max out the injectors, I doubt the same mods on a 2.2 will neccesitate an injector swap.