Start with looking at a "designer" style ... also you can find Mont Blanc pens for sale and compare the real thing to the pictures of various makers kits that seem to look like a Mont Blanc.
A closed ended Baron in gold titanium using black polyresin for both the upper and lower will look a lot like a MB... and if you upgrade the nib to 18k, it will be just as expensive to make too!
Thanks Guys
I think I'm going to suggest either a Sedona or Churchill. I'm not really big on those round top euro kits. They feel a little too cheap for me.