Dimensionally, all the rods from 2.5-3.2 are the exact same. But there could be minor differences.
You can get forged rods from maxspeeding (equal thickness on small end and big end) or THS ( proper offset for small end).
24V forged pistons can be had from CPS Pistons in Italy.
The stroke for the 2.5 is so short, I'm not sure why you need forged rods, unless you run it to 8000 rpm regularly.
If you keep it to around 7500 rpm, and have everything (crank, pistons, rods, flywheel, pulley) balanced, there should be no problem with stock parts. Even the GTA has a relatively short stroke....err...about 78mm? That's nothing compared to the Alfettas with 90+mm of stroke. Hell even most square engines 2.0L engines which rev really high have 86mm stroke.
2006 Honda Accord CL9 Type S 6-Speed
1996 155 2.5 V6, Squadra Tuning, RJR Cams
1995 164 Super 3.0 24V
2001 156 3.0 V6, Jim Kartalamakis 10mm cams,
1987 75 3.2 V6, Jim Kartalamakis 10mm cams, Stage2 Injectors, Autronic SM3 & CDI 500R