Hedman Hedder question

[wolfthing2000]

I have a catalog showing Hedman's charts and notes for the correct headers for a small block in a K-20 with a small block.
My concern is a mention in a note of a Dealer installed clutch pivot tube that is " behind or under the rear exhaust tube" .
Does anyone know about what they mean here.???
My 69 looks to be in the same position on frame rail to block as a 66 I had with 327 factory, if someone could snap a picture of there truck linkage at the header area I would be able to compare. I believe I have a stock set up but the location that Hedman talks about is so close to what I have that I am not sure which is which that they talk about????

Thanks,

Dave