According to my 1949 Chrysler Parts Book, Canadian P17, P18, D31, D32, D30, S13 and C45 use 6 rods of the same part # (954446)(1112764)(1112765)
The US built cars use one part # for 1,3,5. and a second part # for 2,4 and 6:
1,3,5 US built Part # 954376 are for D29 and D30
2,4,6 US built Part # 954377 are also for D29 and D30
1,3,5 US built Part # 1115901 are for P17 P18 D31 D32
2,4,6 US built Part # 1115902 are for P17 P18 D31 D32 as well
(Also, all of the 8 cylinder cars used two part numbers as well, 4 of part #954436 and 4 of part # 954437)