Not worth the hassle, or cost involved IMHO
The engines arent exactly cheap to start with, then you will need an aftermarket management system, such as bodylogic, which will cost more than a 2nd hand engine
You will need the 6spd ZF box that is bolted to the engine already, and have your LT230 converted to accept the g/box splines...
And the auto selector mech.
You would proabably be best buying an acc. damaged car to start with, so you know you have everything. Pete @ Bell Auto's is doing something similar in a 100" hybrid, but there is a massive amount of time, and money involved...
If you do go ahead with it though, good luck