Can someone please help me with some engine sizes for these saws? I am looking for 50cc to 70cc engines to convert for a few planes. I have a Brison 5.8 and 2.4 as well as a Sachs 3.7 so Sachs/Dolmar is ok. I had a Stihl 026 saw so they are ok. Echo seems to be a popular choice also. I have a Poulan 46cc in a saw now, just looking for a little bit bigger. Thanks for any info.
Brian

Stihl:
Models 024, 028, 029, 031 (56cc?), & 044. Any others that would be good conversions as well.

Echo:
Models 500 &550

Dolmar:
Models 112 & 114