Gears & Axles - 3.42 IRS differential, which one?

I'm in need of a 3.42 IRS differential, I was thinking about the 2010 Camaro but I found out none makes 3.42 gears for that diff.

Can someone tell me if that gear is available for a GTO or G8 diff? And where to buy that gear?

Or what is my best option for what I am looking for?

I am also considering the CTS-V or Solstice differential.

I just need to know which GM V8 IRS differential has an aftermarket 3.42 gears available. Please.

why do you need 3.42 gears exactly?

why do you need 3.42 gears exactly?

'cuz I am building an AWD project, and the front diff is a 3.42. I already have a Vette diff to match that, but I'm not using it anymore because of all the trouble making an adapter for it.

I might be considering changing the front diff if there's too much trouble finding a rear diff with that gear.