[Spridgets] demister ducts

[Andy Webster]

Greetings
 
I have a set of demister ducts i want to install in my sprite.
They are the type where the flexible hose enters at the centre, and they have
2 small lugs to one side , for fasteners.
 
My sprite was, i believe, not fitted with a heater from the factory.
I am wondering how these ducts are fastened.
It looks like they are supposed to be screwed directly to the cowl, meaning
the heads of the screws are clearly visible, and I have to drill through the
bodywork 4 times.
 
Can anyone tell me otherwise?
Is there a sneaky way to attach these?
Not keen to drill through the paint, especially in such an obvious
place...right in front of your eyes.
 
cheers,
Andy
 
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