RE: Magnum 120 4-stroke or Saito 100 in a Seagull Yak?
They produce about the same power in the real world and the Saito is a bunch lighter. Bench run the Magnum before you stick in in any plane to make sure it runs well. A lot of people like the Magnums, I'm not a big fan so I sell or trade them whenever I get one in a trade deal.