I've heard horror stories about fitting solid flywheels to mondeos , personally i'd stick with what its made with so if mine goes before i get rid then it'll get a dual mass replacement .
Mines done 150,000 , 54 plate 130bhp and one previous owner , lease company so its had what it needed but i think its ready for the odd injector now .
Good cars but toooooooo many problems i've read about so would never have another .