[Rebelbase]

That looks like the front half of a P-47 Thunderbolt.

[Philo-Junius]

Similar design constraints. The supercharger ductwork required a relatively large fuselage and cowling.

[Seven plus One]

Pratt&Whitney R-2800 Double Wasp

If it had this baby stuffed in there, it would be. (The F4-U used this engine too, to keep the thread on topic.)