The P-38 Lightning was debatably one of the stranger front-line aircraft of WWII, with its twin boom construction and double engines. However, the P-38 ended up being quite successful during the war, especially in the Pacific Theater. WI the twin boom configuration for fighter aircraft, as well as other hallmarks of the P-38, became more popular in aircraft manufacturing? Would we see an evolution of fast, heavily armed fighter aircraft that aren't super maneuverable? Also, AFAIK engines for fighter planes improved so much during WWII the two-engine configuration of the P-38 wasn't needed anymore by the end to provide speed and high-altitude ability. Would we have to hold back engine development somehow?