FWIW, early 2.4s used forged rods, later ones switched over to powdered metal.
Here are the different part numbers for the rods:
2006-2007: 12596088 A 2.4-B/P (LE5), (1ST DES) ROD, CONN (FORGED STEEL W/ROUNDED EDGES ON CAP AND MFG TRIM MARK AROUND OUTER PERIMETER) (FOR 2ND DES SEE 12611360)
2008+ 12598216 A 2.4-B/P (LE5), (2ND DES) ROD, CONN (POWDER METAL W/SMOOTH SURFACE CAP AND SINGLE RIDGE ACROSS CAP, W/O MFG TRIM MARK AROUND OUTER PERIMETER) (FOR 1ST DES SEE 12596088)
Any one running over 300hp on the later rods is playing with fire! (note this is only for the LE5)