Correct info on the bar mounts. In most cases, they also use the same drivelink counts. However, the smaller saws with .325 chain are a bit tight and depending on who made the bar, you might have to add a link. Such as 67DR instead of 66DR for a 16", 73DR instead of 72DR for an 18", etc. In fact Solo ships these saws with the longer chains. With a Windsor CJL bar, you can use the more common smaller sizes.
Big saws all use the standard Husky/Jonsered drive link counts.