Trans Dapt or Mancini for Slant 6 to 440 swap?

A guy, here, sells a Trans-Dapt 4697.
Just wanted to know how this kit mounts onto the K-member.
In case I would like to install a 318 into the engine bay of my /6 '71 Demon, but after checking the Trans-Dapt part number, it's for installing big blocks engines (B/RB). Not what I'm looking for.

Anyway, now I know the kits are just bolt in.
Thank you Joe, you've been helpful