I suspect that that's how the factory did it.  I've got an 83.5 and an 84.
Both have bolts on the end with the hose connection and studs on the opposite
end.  Admittedly a small sample, but both engines are 'virgins' so I have no
reason to believe that it came any other way.  BTW, I've tried all sorts of
ways to get to the stripped bolt hole on the 83.  The head HAS to come off to
repair it.  Drat!!!  And the 'spare' head that I have is cracked.  Double drat!!!

Jim Arnott
WetWesties
Union, OR