That cant be right.
P-51C
Packard Merlin,V-1650-7,1,490 hp,Two stage supercharged
P-51B
Packard Merlin V-1650-3/7,1380 hp.or 1,420hp Two stage supercharged.
All in total they travel almost same speed but.Just would be nice to intro all 51's to AH.
With the introduction of the P-51C-5-NT onto the Dallas production line and the P-51B-15-NA in the Inglewood production line, the Packard V-1560-7 engine was adopted as standard.
Serial numbers of P-51Bs:
43-12093/12492 North American P-51B-1-NA Mustang (NA-102) c/n 102024541/24940. 400 aircraft
43-6313/7112 North American P-51B-5-NA Mustang (NA-104) c/n 104-22816/23305, 24431/24540, 24941/25140. 800 aircraft
43-7113/7202 North American P-51B-10-NA Mustang (NA-104) c/n 104-25141/25230. 90 aircraft
42-106429/106540 North American P-51B-10-NA Mustang (NA-104) c/n 104-25231/25342. 112 aircraft
42-106541/106738 North American P-51B-10-NA Mustang (NA-104) c/n 104-25343/25540. 198 aircraft
42-106739/106978 North American P-51B-15-NA Mustang (NA-104) c/n 104-25541/25780. 240 aircraft
43-24752/24901 North American P-51B-15-NA Mustang (NA-104) c/n 104-25781/25930. 150 aircraft total of 1990 P-51Bs
Serial numbers of P-51Cs:
42-102979/103328 North American P-51C-1-NT Mustang (NA-103) c/n 103-22416/22765. 350 aircraft
42-103329/103778 North American P-51C-5-NT Mustang (NA-103) c/n 103-22766/22815, 03-25933/26332. 450 aircraft
42-103779/103978 North American P-51C-10-NT Mustang (NA-103) c/n 103-26333/26532. 200 aircraft
43-24902/25251 North American P-51C-10-NT Mustang (NA-103) c/n 103-26533/26882. 350 aircraft
44-10753/10782 North American P-51C-10-NT Mustang (NA-111) c/n 111-28886/28915. 30 aircraft
44-10783/10817 North American P-51C-11-NT Mustang (NA-111) c/n 111-28916/28950. 35 aircraft
44-10818/10852 North American P-51C-10-NT Mustang (NA-111) c/n 111-28951/28985. 35 aircraft
44-10853/10858 North American P-51C-11-NT Mustang (NA-111) c/n 111-28986/28991. 6 aircraft
44-10859/11036 North American P-51C-10-NT Mustang (NA-111) c/n 111-28992/29169. 178 aircraft
44-11037/11122 North American P-51C-11-NT Mustang (NA-111) c/n 111-29170/29255. 86 aircraft
44-11123/11152 North American P-51C-10-NT Mustang (NA-111) c/n 111-29256/29285. 30 aircraft total of 1750 aircraft