Okay guys, this stuff is confusing to a beginner, so i need some insight. I picked up an older model poulan 2900 saw. I believe a 96 model, for cheap. To me this saw is all i need and has all the power i need. Right now it has a 20" bar on it. It is not one of those saftey bars either, and the chain is not one of thse saftey chains. It cuts great but the bar is just too long for me. So i had an old 16" bar and chain that i thought i would try. Well i discovered this saw uses .325 gauge chain where as my other 16" chain is three-eights gauge, and the sprocket wouldn't work with the 3/8 chain. So, as long as a new chain is .325 gauge, and the bar goes with that chain, it ought to work, Right??