Center Link Idler and steering Arm question

Aloha,

We are swapping a 360 into a 1968 Dart. We are dropping the K Frames today and swapping them when I noticed that there was a difference in the shape and size of the V8 to the Slant 6 (with regards to the Idler and steering arms).
We are running headers so this is a concern whether or not centerlink will pass through correctly if I use the Slant 6 steering gear.
Any tips or advice would be appreciated. Both cars are power steering. Upon inspection they are very similar.

Thanks

Scott