The Illinois Administrative Procedure Act is hereby expressly adopted and shall apply to all administrative rules and procedures of the Department of Revenue under this Act, except that (1) paragraph (b) of Section 5-10 of the Illinois Administrative Procedure Act does not apply to final orders, decisions and opinions of the Department, (2) subparagraph (a)(ii) of Section 5-10 of the Illinois Administrative Procedure Act does not apply to forms established by the Department for use under this Act, (3) the provisions of Section 10-45 of the Illinois Administrative Procedure Act regarding proposals for decision are excluded and not applicable to the Department under this Act, and (4) the provisions of subsection (d) of Section 10-65 of the Illinois Administrative Procedure Act do not apply so as to prevent summary suspension of any license pending revocation or other action, which suspension shall remain in effect unless modified by the Department or unless the Department’s decision is reversed on the merits in proceedings conducted pursuant to the Administrative Review Law.