big tee,
I did it to my 46 in the driveway under a tree. All of the pictures of my projects are on the Fickr link below: the closed to open swap and the T-5 install. I did mine from John Sandoval project pictures and 6cylindersovertexas is right, it is actually a pretty fun project and between everyone on the site you can ge it done.
Feel free to PM me with specific questions and happy to answer them for you.
Do a search too, numbers and years for the t-5 aquasition, adapter(s), etc. It is all recorded.
Cavebull