1970 340 Exhaust Manifold Casting Number???

Hi,

I have been looking around for 340 HP manifolds and have found different information for the actual casting numbers. Does anyone out there actually have a set and can confirm the actual casing numbers? Pictures would be great. Thank you in advance!!

340 1968-70 ALL / Right 2863549
340 1968-70 ALL / Left 2863553

Are the the correct numbers?????
Author: BigTown3