im wanting to know if i can run 19lb injectors on my 5.0L SO computer?
But I have swiched over to the HO upper plenum with 3/8inch spacer and 60mm throttle body.
No, sure can't. You CAN run the HO upper/lower, but you gotta switch the injectors, cam, and EEC all at the same time to avoid any issues.
Just keep the 14's that are on there.19's are not needed with an SO engine.Do the H.O conversion,then add the 19's.