looks identical to the ones in my car right now actually. 04 eco...
WAAAAYYYYYYY to short to fit properly on the eco manifolds. I personally prefer ACCEL or Seimens Deka injectors. I'm going to be running a set of the 80lb/hr Deka's, and they fit really well. And they're about the same price as the ones you are looking at.
Currently #4 in Ecotec Forced Induction horsepower ratings. 505.8 WHP 414WTQ!!!
Currently 3rd quickest Ecotec on the .org - 10.949 @ 131.50 MPH!!!
I'm pretty sure they are longer than the Lsj injectors and people run lsj injectors in
both ld9s and 03-05 Eco rails which use the skinny long injectors to begin with.
The dekas did they fit in your stock harness properly?
if its the injector pictured , then they ARE WAY TO SHORT , whats pictured are the LS2/7 shorty injectors which are used on the other newer LS motors
LS1 injectors are about 1" longer