▁was ▁in ▁short ▁supply ▁and ▁they ▁were ▁forced ▁to ▁use ▁the ▁J unk ers ▁Mot oren werke ▁firm ' s ▁J um o ▁ 2 1 3 A ▁engine . ▁ ▁Even ▁though ▁the ▁ 3 5 ▁lit re ▁engine ▁disp lacement ▁J um o ▁ 2 1 3 ▁had ▁been ▁deliber ately ▁designed ▁to ▁have ▁as ▁many ▁of ▁its ▁engine ▁access ▁points ▁as ▁possible ▁made ▁to ▁be ▁identical ▁with ▁the ▁ 4 4 . 5 2 ▁lit re ▁disp lacement ▁DB ▁ 6 0 3 ▁power plant ▁( G erm any ' s ▁largest - dis p lacement ▁invert ed ▁V 1 2 ▁aircraft ▁engine ), ▁this ▁change over ▁required ▁some ▁reconst ruction ▁of ▁the ▁engine ▁cow ling ▁and ▁cool ing ▁system . ▁The ▁most ▁visible ▁change ▁was ▁the ▁required ▁one ▁to ▁the ▁engine ' s ▁air ▁int ake ▁location , ▁as ▁the ▁J um o ▁ 2 1 3 ' s ▁super char ger ▁int ake ▁was ▁located ▁on ▁the ▁star board ▁side ▁of ▁the ▁engine ▁( as ▁standard ▁for ▁all ▁models ▁of ▁the ▁earlier ▁J unk ers ▁J um o ▁ 2 1 1 ▁invert ed ▁V 1 2 ), ▁versus ▁the ▁DB ▁ 6 0 3 ' s ▁port side ▁location , ▁the ▁standard ▁for ▁all ▁Da im ler - B enz ▁invert ed ▁V 1 2 ▁engine ▁designs . ▁The ▁Me ▁ 2 0 9 ▁featured ▁a ▁new ▁tail ▁section , ▁wings , ▁wide - track ▁landing ▁g ear , ▁a ▁t aller ▁tail ▁and ▁an ▁ann ular