I suppose that may have been one of Scott's concerns. However, I am installing procar lowback buckets so I don't know if shifter location will be too critical. From what I've found the magnum's shifter location can be mounted about 5" futher forward (when in the forward factory position) than the original t56. The magnum's shift locations seem to be quite comparable to that of the TKO.
I found a good side by side picture of the t56 and t56 magnum that shows the difference in the shifter location.
http://www.camaroperformers.com/cama.../photo_08.html
I've got my fingers crossed that Scott is just covering his basis before going any further.....I suppose a lot of people probably get pretty pissy if they buy something and it doesn't fit with their bench seat or whatnot. But so far I haven't found any huge snags. I'll be sure to update once I get this sorted out, the more information on here the better.