Amtek Auto today said its $150 million foreign currency convertible bonds (FCCBs) issue has been fully subscribed and may get listed on the Singapore Stock Exchange.The company's FCCBs issue of $150 million which has been fully subscribed, are expected to be listed on the Singapore Stock Exchange, subject to regulatory approvals, Amtek informed the BSE.The company has also informed that out of total proceeds of FCCBs of $ 150 million, the company will pre pay its external commercial borrowing facility in full that is, $60 million.