NO the links above are as far as i know the only GTR conversion that has ever been completed.
What application are you looking for ( drag, road race...) If your looking for a drag car application modifying the Z with a solid rear axle, is your best bet for going fast. there are a couple guys including myself well into the 9s and 8s running a solid axle.
I will let Ripz post his videos if he wants.
So lets sum this up. one one car ever modified, no one here on hybridz has done it, you are only going to get speculation on what it will be like to do it, SOOOO just do it and let us know how it goes. OR move on to another project.