I would get the kit personally. You can sell off the parts seperately and make a decent amount of cash towards the Mugen parts.

Theres a lot of miscellaneous parts that you probably wont get if you buy everything piece by piece. And it will end up being more than a kit.

Heres a complete list of what youll need. As youll see, its definitely more than a few body parts and a rad/bumper supports.
http://students.washington.edu/krist...egra_front.htm

Youre better off buying the kit for $2000 shipped and selling the hood and bumper w/lip, making $500+ back and putting that towards the Mugen parts.