(a) Pursuant to a request for an advisory ruling which meets the requirements of this subpart, Customs will promptly issue an advisory ruling.

(b) Pursuant to a request for a final determination which meets the requirements of this subpart, Customs will promptly issue a final determination. If the request does not meet the requirements of this subpart Customs may decline to issue a final determination or may issue instead an advisory ruling.

(c) Requests for final determinations which include the information set forth in §177.25(b)(5) (relating to a specific procurement) will be considered by Customs before all other requests (advisory rulings and final determinations).