I converted my 92ish Yukon into a singlespeed over the summer and due to some recent issues with suspension on my regular steed, I want to make it trail-worthy for those days when I need a back up. My spare parts bin can take care of most of this, but I need a new headset and bb as the original ones are toast. I don't have calipers to measure, so does anybody know if the bb shell is 68 or 73 mm? And also the size of the fork steerer? I would assume 1 1/8, but confirmation would be great. Thanks for any help.