Expression of enthusiasm about Ford's latest chassis, perhaps (4)
I believe the answer is:
body
'chassis perhaps' is the definition.
(chassis is a kind of body)
'expression of enthusiasm about ford's latest' is the wordplay.
'expression of enthusiasm' becomes 'boy' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'about' indicates putting letters inside.
'latest' indicates one should take the final letters.
The final letter of 'ford' is 'd'.
'boy' going around 'd' is 'BODY'.
Can you help me to learn more?
(Other definitions for body that I've seen before include "Group of persons thought of as an entity" , "trunk" , "Substance" , "Physical structure of an organism" , "Physique" .)