02/28/2010. Remarks by Johan Visschedijk: "The final Merlin-engined model, the P-40L, was initially identical to the final production P-40F-20, but with the P-40L-5 (shown above) production batch, two of the wing guns were removed, together with some fuel capacity, as weight-saving measures. These, in fact, produced only a 4 mph (6.43 kmh) increase in max speed at rated altitude. A total of 700 L-model Warhawks was built. Three hundred P-40Fs and P-40Ls were re-engined in 1944 with the Allison V-171O-81 as P-40R-1s and -2s because of Merlin spares shortages."