[Healeys] Concours Question on Water Hose Clamps - BN2

[Jim LeBlanc]

What are the concours correct water hose clamps for a late model 1956 BN2? 
 
I am looking at March-April 2010 Healey Mag p. 11. Are these also correct for
the BN2?
 
Looks like wire clamps with slotted round-head screws. So I order clamps from
Moss and replace the hex head screws with round-head screws. Right?
 
Thanks,
 
Jim LeBlanc
1956 100-M