Designation substitution of anti evasion directorate to Central Excise Intelligence under Customs Act alters enforcement authority. Amendment substitutes the words 'Directorate General of Anti Evasion' with 'Directorate General of Central Excise Intelligence' in Notification No.31/2000 CUS.(N.T.), effected under the powers of sub section (1) of section 4 of the Customs Act, 1962, thereby altering the designated enforcement authority named in the earlier notification.