I'm to lazy to go and read the post before but from what I have heard you can run a RB26 w/ a RB25 GTS trans, so it should be do able with a few mods like custom drive shaft, mount kit, single turbo conversion (don't know if both will fit), and so on. I have never really looked into it to much. I also know that McKinney Motorsports specializes in RB swaps, so I would check them out to see if they already have a kit for the swap. The guys at Ma-Motorsports put one in a z32 no problem, so I would check them out also.