Mainstream hot-rod converted to steer at last (8)
I believe the answer is:
orthodox
'mainstream hot-rod converted to steer at last' is the definition.
I can't judge whether this defines the answer.
'hot-rod converted to steer at last' is the wordplay.
'converted' is an anagram indicator.
'to steer at last' becomes 'ox' (I can't justify this - if you can you should believe this answer much more).
'hot'+'rod'='hotrod'
'hotrod' with letters rearranged gives 'orthod'.
'orthod'+'ox'='ORTHODOX'
Can you help me to learn more?
(Other definitions for orthodox that I've seen before include "Conforming to the accepted beliefs of a religion" , "Holding conventional beliefs as in religion" , "Adhering to doctrine" , "Conforming with tradition" , "By the book" .)