1970 Skylark GS 455 - Correct exhaust manifolds

Looking for good set of exhaust manifolds for a 70 GS 455.

PM me if you have a set.

 

ttt

 

I have some 455 manifolds out in the shop. I don't recall the #'s on them, but they've been surfaced and bead blasted.
No idea if they are 'correct' for a GS tho!

 

Is there a certain part number, have the 71 455 that I was going to pull the manifolds on soon, pit free.

 

The part numbers are as follows:
Left manifold - 1233899
Right manifold- 1238094

 

Mine were 1383648 68-70 400/430 and 1233451 71-74 455

 

I have 2 passenger side, #388648 & #238094.
The 388648 is pitted down by the flange, cosmetic only I think. The 238094 is really nice. Both have been bead blasted and surfaced.
I took pics but gotta go redo them, something goofed up!
I must have sold all the drivers side!