I forgot to add some of that some of the Merlin engines built for the P40. Where built in the USA by Packard Automotive. Enjoy the information ^^^
The 79th FG flew the Rolls Royce version in the African desert battles. The P-40F and the "L" models have the Rolls Royce merlin engine and yes these were faster and had a heavier bomb load capacity. The "L" model was a lengthen in the fuse lodge area. Check out the 79th FG commander standing by "Little Joe" Here is some good information for you good members.79th FG / P-40 information / development(This is in PDF format. Need Acrobat reader or something similar.)