When compared with the front fenders on the diecast car, I found out that even though the diecast is 1/24 and the Sedan Delivery is 1/25, the fenders were exactly the same size except for their height. I also discovered that the grille on the SD was too low. The difference was the space between the wheelwell opening and the body line on the fender. The SD's was not tall enough in this area. So I thought about cutting the fender length-ways and then under where the turn signal/grille is positioned and bringing it all up. You can even see in the first picture where I made a cut line.
But then, the more I looked at it, and being that the fenders were so darned close between the diecast and the SD, I decided to use the diecast fenders. I figured that it would be less work in the end beings that the front fenders from the diecast already had the right proportions. The only difference between the SD and the diecast and their scale differences was that the body was wider. I cut the cowl away on the diecast and then took a center section out from the bumper splash pan and voila! There is still A LOT of work to be done here but I'm kinda digging on it. I personally feel this is also a HUGE improvement. What say you?