The 026 has more stroke than a 246, and it shows. The 026 still has plenty rpm, later spec is at 14,000. Definitely one of my favorite Stihl's stock, and my ported one is my truck/quad saw that I run more than anything else. It is on par with my ported ms261, and both perform much better with 3/8 chain than .325.
I haven't ran it back to back with a 346 yet, but it absolutely smokes a stock 353. I think my 2149 is about on par with a stock 026.
I have 346 parts on the bench, it's just a matter of getting the time to build one.