I have a T56 magnum XL I'm swapping into my G8 GT and I'm trying to figure out where to hook things up to from my car to the transmission. Mainly the speedometer (so I can have cruise control hopefully) and reverse brake lights. Anybody have info on that?

I know what's what on the transmission, but not what wires etc. I need to find from the car to put into the transmission.

I could have sworn I read about some people maintaining full functionality past swap. Finding helpful info has been difficult at best so far though.