This is my interpretation of the wheel bays based on the photos of the existing G4 which has obviously been tampered with but which still has the frames and holes where panels were riveted. So I just fitted in the missing panels. Since I could not find any period photos for the wheel bays I will go with this.
The metal undercarriage I bought for the revell model does not have the rubber boots. I am trying to simulate these using wire and blending it in with white glue to fill the gaps and make it one whole piece not like a spring. I will know how it turned out when I paint it.