Phaeton's rebuilt as a carriage for one (8)
I believe the answer is:
stanhope
'a carriage for one' is the definition.
I can't tell whether this defines the answer.
'phaeton's rebuilt' is the wordplay.
'rebuilt' indicates anagramming the letters.
'phaetons' with letters rearranged gives 'STANHOPE'.
'as' acts as a link.
Can you help me to learn more?
(Other definitions for stanhope that I've seen before include "old-fashioned conveyance" , "Phaetons can be turned into a light open one-seater carriage" , "vehicle" , "It may have only two wheels" , "Light horse-drawn carriage; Nineteen across (anag.)" .)