Modvat extension adds tariff headings 51.06, 56.04 and 56.06 to the excise notification schedule amendment. The Central Government amended an earlier excise notification to extend Modvat credit to additional tariff headings by substituting the figures and letters in column (4) of the Table for specified Sl. Nos., thereby broadening the list of headings eligible for Modvat credit under the notified schedule.