I found this nugget of info on one site:
"**** NOTE: Some customers have experienced installation issues with this fender. We have personally installed these on a customer's car and it is a tight fit. On some cars, modification of the fenders may be required to complete the installation. This can include cutting and re-fiberglassing portions of the mounting flange. Because of the possibility of having to do this rework, these fenders are offered at a 33% discount (regular price ****) but they CANNOT BE RETURNED.
Based on the original part, with two inches added to accomodate wider tires. Measures 57" x 24", and a wheel well of 27"."
When they make the fender wider, will the 2'' not continue to taper forward and back giving it extra length?