wuzak
Captain
Certainly the P-51A and B could be considered easy to manufacture.... compared with a spitfire or P-38 but still itwas more complicated than a Me-109F4 or G2, the Mustang also was a 1 ton heavier more so it consume more raw materials. Some people wont agree with me but except the sophisticated V12 engine the me-109 was budget plane, the best "bang" for your reichsmark.
They did build 20,000+ Spitfires and Seafires.