The how to on the "LittleMissE Mod"
More expensive less time consuming way:
1: Buy a set of Laker brand YFZ rad shrouds. Color of your choice.
2: Install.

Maier will work too, just less pointy and shaped a little different. We liked the Laker look and it mimicked the stock YFZ cut perfectly.
Cheap way:
1: Buy a set of stock YFZ shrouds. Any color will do. Blue ones the YFZ crowd will dang near give you them.
Will add pics of this part later:
2:Cut off the tank side of the rad shroud.
before:

Here is where you need to cut off the tank shroud section and where we chose to trim off the extra:

3: Trim to fit the conture of the side curves. Basically to make it flow. Not much trimming (if any) is needed. We just choose to trim a tab off here and there.
Here is where we chose to "shape" the shroud to flow with the Z400 curves.

Like all fender cuts you can use tool of choice. We used a dremel with a cut off wheel. Heat edges with heat gun/ lighter/ torch to clean up the rough edges. The torch is my favorite
4: The left side lower mounting tab fits onto the lower rad bolt hole.


The uppers we got some brackets from the hardware store. Just straight brackets with the hole pre drilled in it. Cut them to fit the length you need. There is a hole in the top of the frame tube near the mounting point for the front fenders that you can bolt one side of the bracket to and the other to the upper mounting tab of the shroud.
The right side (brake side) need a hose clamp through the lower mounting hole of the shroud and around the lower down tube of the frame.

The upper uses the same bracket set up.
5: Once all is trimmed and mounted the way you want. Buy some made for plastic spray paint and spray them to the desired color. We used just White, and it matched perfect. We also used Krylon Fusion spray paint.
6: All done. Take pictures. Show off to friends.
7: Add "LittleMissE Mod" to your sig
* Note our upper brackets are not on as we are making mounting point/ brackets for the lights.*
Now go out and ride and enjoy cooler radiator temps!