Hi Ben, welcome to the forum. I have a thread on here that you may find interesting, I am building a '27 T on a '32 chassis, I am building the body from scratch, I am not finished yet but I have done quite a bit. I did not cop out and build an aluminium facsimile. Its in steel and as exact a copy of an original as possible.
Here is a link to my thread if you are interested.
http://allmetalshaping.com/showthread.php?t=5469
David