Will LS3 engine harness work on an LS2?

[67Ruckus]

I have a 2006 CTS-V LS2/T56 that I'm prepping to put in my 67 Camaro. I have the E67 ECM, but just found out I won't be getting the harness for the pullout engine.
I've searched all over for aftermarket harnesses that use the E67 ECM with the 58x reluctor CTS-V LS2/T56. I'd like to modify a stock harness myself. My question is that will all the connectors on a 2010 LS3 harness hook up to the connectors on my CTS-V LS2? I've read that the 2010 LS3 uses the E67 ECM, so this seems like it may work.
Anybody have experience with these harnesses?

Thanks in advance,
67Ruckus