T, I work with Jay at FWC he makes these for me. I don't actually do the CF myself. I let the experts do that, LOL! I scanned the existing boot with my 3D scanner, converted it to a CAD model then made several tweaks based on flow parameters/characteristics, then sent the model for 3D printing to create basis for the mold. These are done in an autoclave.
They will be available for the 450r soon, (couple of weeks), I need to make a few minor adjustments to the design. Unfortunately they are not direct bolt on to the stock airbox, I had to make a few simple modifications to the airbox to make these work with the stock box. My original design includes an aluminum box that will be sold as a package deal, but if someone wanted to do the required mods to the stock box I would sell the CF intake seperately.
I just thought you all would like to see some of the stuff I'm working on.