Misc '67 - '73 LA exhaust manifolds

Your LH 2465719's are for '64-9 B & C bodies with a 273 or 318LA engine. The 3512077 is for '70-4 B,C, and E-bodies with a 318. The early and late should interchange. The main difference is appearance and extra reinforcement ribs for the extra heat caused by the later heat stoves and higher engine temps. Your RH 2843953 will fit just about all Mopar models from '64-73 with a 273 or 318, but, appearancewise, it's visually correct (round heat riser weight) for the '68 and newer models.....actually, I think '68 and '69 were slightly different than the '70-3 version. I can't see your weight very well in the photo to tell which one it is, but, judging by the '73 date code, probably the '70-3 type.