Dope and crack in top drawer (6)
I believe the answer is:
gentry
'top drawer' is the definition.
(I've seen this before)
'dope and crack' is the wordplay.
'dope' becomes 'gen' (I've seen this in other clues).
'and' means one lot of letters go next to another.
'crack' becomes 'try' (I've seen this before).
'gen'+'try'='GENTRY'
'in' acts as a link.
(Other definitions for gentry that I've seen before include "people of a particular sort" , "Upper classes" , "People of a social position just below the nobility" , "Class of society" , "People of high class" .)