FWIW from what the hear the 024 and 026's had around three mufflers .One was highly restrictive,one so so and one more open.
The 024 I have was of the restrictive nature which slightly scorched the exhaust side of the piston,not bad .I just gutted the muffler and ran it .For 42cc's or whatever it does just fine.
I don't know about the super but mine does not have an adjustable oil pump .Not a big deal it dumps enough oil for a 16" bar .
It might be possible to use an 026 cylinder,not sure .If it's a deal like using an 038 mag cylinder on an 038 AV you have to change the cylinder bolt hole location ,not worth the effort IMO.