That looks like a threaded bolt hole, what is the hole next to the red circle?
That threaded hoke is for a fuel rail stud, the pcv is the bigger hole next to it.
2002 GTP..DD.. Topswapped Gen V L26, XP cam, Full Size IC, E85, 2.6 Pulley,SD Headers, K&N Intake, N*/Lq4,FP Rewire, TEP Trans, F body Fronts, GXP Rear Brakes, LE Spoiler, AGXs with vogtland springs, bonni gxp rims, Timboku Tuned 1995 Cutlass Supreme Convertible...Soon to be L32Swapped.....2005 GXP Stock