WTB: Remington ventilator choke tube, 11/87, 12gauge

[tracker#1]

Looking for a Remington ventilator choke tube for my son's 11/87, 12 gauge, discontinued at Midway USA....

[TRKYDOG]

Saw one on eBay last night when I was checking out choke tubes:

http://www.ebay.com/itm/FACTORY-Remington-870-1100-Extended-Ported-TURKEY-Choke-Tube-12ga-Shotguns-/400310575524?pt=LH_DefaultDomain_0&hash=item5d345ea1a4

[SCDieselDawg]

Most guys were finding them at www.gunpartscorp.com but I'm not seeing any on their site.

[bigbird]

Is it a very good choke?

[Turkey Trot]

Is it a very good choke?

Brad/I Like Hevi 13 and some others on the intermess have gotten very good patterns with it using their guns/loads.  I, on the other hand, have gotten better patterns from the non-ported Remington OEM SuperFull in a  head to head match with the Ventilator (Rem 11-87 in 12 ga.).