Hi,
I'm almost ready to start adding the decals. Since the plane is meant to be a "Prototype" I figure I will only put on roundels on the tops and bottom of the wings and fuselage, a "Circle P" Prototype marker on each side of the fuselage, and maybe a tail flash, but won't add any other markings. Since I'm a little short on cash right now, after having spent a bunch at a local model show, I figured I should scour my existing decal stash rather than trying to buy anything new.
The image below shows some of the existing decals that I have that might be suitable, alongside the original decals from the FROG Vengeance kit and the MPC/Airfix Hellcat kit, for reference.

The images from upper left to lower right include:
- Matchbox SBC Cleveland
- Heller SBC Cleveland
- Airfix Defiant
- Airfix/MPC Hellcat (sorry they got washed out since they are basically white decals on offwhite paper
- Airfix Fairey Battle
- FROG Vengeance
- Mark I Ltd Prototyoe Circles
In general I am trying to go for something similar to what is shown for the lower image of the Gloster E.29/38 in this image I found in an internet search.

Unfortunately, on alot of the decals that I have the Yelloe Rings on some of the roundels are out of register. As such, I was thinking of using the Defiant decals, though the Blue and Red upper wing roundels appear as if they may be too big for the location where I would have to put them on my wing. So I may end up using the Blue and Red upper wing roundels from the Matchbox Cleveland Kit with the other decals from the Defiant kit eventhough the red is just a little different between the two sets, since the Red in the Blue and Red decals from the other kits are much lighter than those for the Defiant and Matchbox kits. And I will also probably use the larger of the two sizes of the Circle P Prototype markings since those decals were originally for 1/144 scale models.
Regards
Pat