In the picture of CSX3252 and its ERA clone that I posted above, all that was done to the ERA clone fenders was to remove and straighten some of the rear fender opening flare.
The other minor modification is to eliminate the comp gas filler depression to utilize the street fill cap. Again, not a big deal when done at ERA. They've done it a number of times.
Were you to chat Peter at ERA up, they might even be willing to (get out your checkbook) do it for you. It was not major surgery.
Jim
PS: Finding a set of Sunburst Wheels is a bigger challenge...