I have four 372’s, but one is old school and really rips compared to the others. The only visible difference is the grey choke pull (that I can see), the others are all blue. Unfortunately the recoil blew apart and wiped out the ignition wire, so it’s been sitting on the shop floor for a while, need to get it fixed. I run the standard 20” bar on those. I have a new 572 xp that came with a 24”. Nice saw and I love having that size bar again. I run 28” bars on my two 395’s (swap out to longer bars as needed).