BBK Longtube Header Problems. Need o2 extensions that fit!

I installed BBK Longtube headers this weekend. I ordered the BBK o2 extenstions from Summit. The part number is 1676 and says it will fit models from 1986-2004. Being that I have an 86, I figure no problem. However, they do not fit. Neither side of them fit. So now I have to return them, and Summit does not carry any other alternatives. The guy I talked with from Summit says he owns a 1990 and told me that these do not look like they would fit. With all of the longtube manufacturers out there, someone has to make an extension that will fit my application. I would prefer a local place so I can test fit an o2 to this to make sure it will work. To the guys that have done them, which brand did you use? BBK is out. I need something different. This is the o2 I have. And the harness I bought.
http://store.summitracing.com/partd...1&part=BBK-1676&N=4294908331+115&autoview=sku
http://www.napaonline.com/masterpag...SH&PartNumber=13913&Description=Oxygen+Sensor. They are Bosch, and the part number is 13913. Something that will fit into this o2.