Here's a comparison of the standard F4U R-2800 installation and the R-4360 installation
of the F4U-1 WM testbed.
![](https://photos.smugmug.com/BTS-2/i-vp63rZp/0/9c39f2a2/O/F4U-1W_R-28_R-436_COMP_01.jpg)
Note that the length from the firewall to the front of the cowling is pretty much the same,
the installation used a standard cowling with a new section added to the rear.