There is no book out there to give measurements, and to the best of my knowledge, no one that has ever done that before. I would first pull out your motor, put the other one in there so it fits with your tranny bolted up, install tranny mounts. I would then test fit the half shafts, and get your measurements correct, then take the LS4 stock mounts, L36 stock mounts a welder and a twelve pack and make something happen. It could be done, and would be insane
I would also go buy another car before I start, that would not be a weekend project.