Which the injectors? Well guess it does not matter, it all came out of the same car at 100k. But the car ALWAYS got quality premium (93 Octane here in Florida) at a major brand gas station that would have high turnover (so fresh fuel) its entire life.
The MAF sensor on the left is NEW it came with the stage 1 part of the Edelbrock SC kit, I am not really sure if its stock or uprated and no idea how to tell, it does have a RE-MANUFACTURED sticker on it.
Stage 2 came with yet another MAP and that is what is in the car now.