[DeTomaso] 1972 cooling hose lines

[LEVITT1946 at aol.com]

Dear Friends,
I am double checking the cooling lines a mechanic helped me with last  
weekend. 
 
Does anyone have a diagram that includes shutoff valves for the heater  
core? If not, can anyone advise me or show me pictures of exactly which hoses 
go  where .Your help would be greatly appreciated .
 
At the neck of my pressure tank is a 3/8" coupling that this gut attached  
to a 3/8" coupling at the top of the overflow tank with no hose clamps.Is 
this  correct?
 
Thank you ,
Bob Levitt
Gumball3000 #56
Team Pantera Racing #3196