Ok, I am tired of hearing my creaky cab bushings. First it started with one now there sound like multiple ones that are making noise. I have watched some of the youtube videos and I think I will tackle the job myself. I was planning on using OEM bushings. I read that there are two types. The yellow foam looking ones and the black rubber ones. Supposedly some trucks have both mixed on the same truck. What do the Excursions have? I do not think the yellow ones last like the black ones if I am correct?? Anyone have a part number and where to get them? Are they all the same? How many do I need? Thanks.