Continuing on with our focus on Batmobile Custom Modeling. Mark Myers lives in Cherry Hill, NJ and has been a Batman fan since he was Five years old. (He’s 42) He is an avid modeler and goes by the user ID BeatlePaulBat on the boards for a good reason - He is a musician and plays Paul McCartney in a Beatles tribute band called Revolution. I thought he did a great job with replacing the grillework on the car. Here’s the method he used:

I didn’t like the look of the solid plastic Grillwork on the 1/18 66 Bat, so I decided to replace them. After a trip to my local Hobby Shop, I found what I believed to be an Accurate grill pattern to the Grill work of the #1 car in 66.
First I carefully unscrewed the Body of the car from bottom. Then I used masking tape around the front of the car, so I would’nt scratch any paint. With a Brand new X-Acto Blade, I made repeated passes along the bottom and sides of the Plastic Grillwork.
[I have to point out that the plastic grill work is attached to the plastic bottom of the car.]
I then Gently Popped them out. I traced the pattern on my Grill work, then cut it out. I did the same for the Clear headlight part already on the car, and Replaced it with my grill work.
I also removed the plastic “Bat ray” lense, and replaced it with clear amber/orange colored plastic. Finally, I scribed in the horizontal lines that were in the lenses in 66.