Concerning healthy overhaul project (5)

I believe the answer is:

refit

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'overhaul project' is the definition.
'refit' can be an answer for 'overhaul' (I've seen this before). I am not sure about the 'project' bit.

'concerning healthy' is the wordplay.
'concerning' becomes 're' (both can mean on a particular topic).
'healthy' becomes 'fit' (synonyms).
're'+'fit'='REFIT'

Can you help me to learn more?

(Other definitions for refit that I've seen before include "dockyard job" , "provision of new equipment" , "Mend" , "Repair - renew" , "Renovate (a ship)" .)

I've seen this clue in the Sydney Morning Herald.

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