68 small block correct heater hose bracket and routing

Check the FSM I have seen in 67 and 69 there are some photos and line drawings that show routing.
I looked in a 69 FSM I had handy and it shows on page 0-16 fig 24,25,27,28 and page 0-20 fig 43( shows routing different than on page 0-16) page 0-16 looks just like 67 dart.

Good luck