Cvd credit under gst

Hi,

I am importer of hardware products and have paid CVD for the same. Can i claim input credit of CVD paid for goods held in closing stock as on 30.06.2017 under GST. If yes , what is the process? I have already availed VAT input eligible for credit under GST and filed TRAN 1 for the same. If CVD can be claimed can i revise TRAN 1 and avail input for the same? 

Regards,