Technicaly in the real world you can do that with every engine no matter what make/displacement. But I dont kno why GT2 left such a good option out. I wanted to make my 427 vette a 550. DOH DOH DOH. ALso consider the following:
GT2 mods are based on factory offered mods. Many manufacturers do not offer the bore/stroke option. At least not the american Big 3.
DID YOU KNOW THAT:
Bore/Displacement upgrade enables YOUR car engine to output more HP without a turbo/super and without N/A tune. This is because wen you make the displacement bigger, the more air can get into the cylinder. More air means more oxygen means higher HP!
NOW YOU KNOW!