Clunkers rhymes with:
plunkers, spelunkers, bunkers, munkres, plunkers, spelunkers, younkers, younkers', anchor's, anchors, banker's, bankers, bankers', bonkers, bunkers, cankers, conquers, drinker's, drinkers, freethinkers, munkres, plunkers, rankers, spelunkers, stinkers, tankers, thinkers, tinker's, yonkers, younkers, younkers'
Clunkers sounds like:
challenger's, challengers, cleansers, colonizers