Hey guys, I haven't posted in a while but I've been lurking in preparation for the top end rebuild of my 1980 CB400T. When I got the bike running last summer, I knew it had plenty of blowby but I got a good year out of it until now, when I figured it would be a good time to freshen it up. The engine has 32,000 miles on it, and I'm guessing it hasn't been opened up in a while, if not since it was built. The camshaft and rockers look good, and there was plenty of oil on them. The pistons and heads had significant carbon buildup but I'm getting them cleaned up. I did the acetone test on every valve and they all appear to be sealing. What I intended to do was slap on a new set of rings and call it good, but when I gave the cylinders to the machine shop to have them honed, they inspected them and told me they were in pretty rough shape, I think they even used the word "terrible" . Visibly they looked okay, but they found a bunch of high and low spots in them. They suggested I had them bored, and I planned to get some oversize pistons and follow through with it, but today I found this: https://www.davidsilverspares.com/CB400T-1980-HAWK-USA/part_175324/. If I get this, I will be able to use the new standard size rings that I already have, and I may even be able to use my old pistons (I'll get them measured but I'm not holding my breath on that, considering the cylinders were that bad). I'm fairly sure the new cylinders (even with new pistons) will be cheaper than a bore and hone at the machine shop, and that's not even adding the cost of the oversize pistons. This is my first time doing anything this in-depth with an engine, so I'm asking you experienced people, does this seem like a good idea or would you rather go with the bore?