I made a good deal of progress with the fenders yesterday.  I created a series of mini molds and fiberglassed several times in different sections to successfully capture the right angles.  So, step 1 is complete.

Today I'll be drilling and mounting the fenders so that they fit correctly.  One issue I have to surmount is that the slope on the fenders seems slightly different than the slope on the mount on the body, but I'm sure I can work around this issue.

Once fitted, then I'll have to create the cutouts for the headers and then create the new walls so that the headers are enclosed.  Unlike metal fenders, which wouldn't lose too much strength when cutout for headers, the fiberglass will benefit from having that extra strength.

After the final modifications are made, I will be to run a second coat of resin and cloth along the entire underside of the fenders.  This will create a smoother look and strengthen the fenders considerably.  

The final step will be to use some filler and gel coat to smooth off the top surfaces — then I'll be ready for paint.