RE: YS 160 DZ
What is the overall weight and wingspann for your plane?
I am also a happy owner of the Saito 180 and this engine turns a APC17x8@8400 slightly rich on 10% nitro and 20% oil. I read one OS160 owner said his engine turned this prop @8700 with the stock muffler so the performance is almost the same, OS beeing slightly stronger but also heavier. For the OS you will probably need a pump/regulator if you want to hover with a big prop up front.