filler neck reducer black neoprene? grommet

I put one of those in my 66 B-Cuda, and it works great. If You get one, read the destuctions a few times, and do what they say. Take your time installing it. You only get one chance. If I remember right I used a very large diameter wood dowel rod, or maybe it was a broon handle. The thing is when installing it, is to keep it sqaure in the tube.

Dave