Organ - Pipes for facade Use

Looking for metal flue pipes for facade use. Will accept non-speaking as long as they can be cleaned up. Prefer large pipes, 4',6' nothing over 8'. Prefer not painted but let's talk. Wish to create two graduated tiers with the largest pipe in the middle graduation going down on both sides. Also looking for 4' and 6' foot wooden pipes for subwoofer facade. John
949-851-7470 or 951-277-4563.