Any way to t-pose GMO ripped models?

I started ripping models from a certain game that lacks models here on the VG Resource, and they are in GMO format ripped with Noesis. The catch is that some of them are NOT in T-pose, so, as a beginner, is there any way to t-pose rigged models easily? No one whom I asked was able to do it in another community... kinda embarassing. If any of you want the model(s) to T-pose them, just ask me.