Note that autos have different LHS and RHS manifolds, where the manuals are the same both sides. No idea if manuals would fit to auto downpipes.
Autos are 602693 and 612975, where mans are 613457.
Are the studs UNF both ends, or is one end UNC ?
not all knowledge comes from books.
I think Harvey should write a book, no joking, he really should. He could call it P6 - All the juicy bits in one serving !
Once the knowledge is gone, it's gone forever.
It doesn't have to be joined up writing.
There's dozens of them, someone should go through the forum and sticky them in a special place if there is no chance of a tome in the offing.