Welcome to the forum Justin. There is a lot of knowledge about all areas of car building and maintaining on here and nobody will berate you for not knowing anything about anything. We don't do that here, so you can ask any question you want without being chastised for not knowing.

There, now that's out of the way. In my opinion, you're thinking in the right direction with a simple first build. The Model T will be one of the simplest to do and there are several companies who make kits. If I were doing this, I too would be thinking stretched body. I've seen too many guys with their knees jammed up into their chin to think about using a standard body. I'll give you a link to the National T-Bucket Alliance tech pages so you can begin researching your project.......
http://www.nationaltbucketalliance.c.../techindex.asp