Movement replacement question

Hello forum friends

I have a Newbie question, hope get answers from experts in here.
I am planning a project seamaster 166.024. Now missing the movement cal565, I believe is right.
My question is can I buy a cheaper donor from other models made in similar years by Omega? They are also cal565, are they the same as the original ones ?

thank you for your information
if I get the cal565 from other omega, does it required any modification before it can be used in 166.024 dial and case?

Finding a 565 donor is a minor issue. As @X350 XJR said, there shouldn't be anything differnet. However, this may vary among other movements in this movement family, as I recall a discussion a while back about longer canon pinions or sweep seconds pinions on certain movements that have dials that need more clearence (but i think this might be limited to the 561/564). For that reasons, you should avoid buying one that looks cobbled together.

I'm not sure if you're building a "vintage" SM300 or one with service parts, but are you sure you have a legit case? They're pretty hard to come by these days. imho, it's sometimes much easier and sometimes cheaper to buy a complete project watch that has issues and "build" it from there.

Thank you for your advice