Does nebody kno if align parts are compatible w other same size helis

There is no definitive list of what parts will work with what other model helis out there, but a fair amount of 450 heli parts are interchangeable.

For example, the main shaft of most 450's are the same diameter, but the lenghts and the holes for the jesus bolt and head block may not line up. Most 450 tail booms are the same diameter, so in theory you could swap out a whole tail end as well. Head blocks, swash plate and arms are generally compatible, but you have to use dimensions for comparison. Even some gears with slight modification. It's all trial and error though.

At one point I had a 450 that was composed of some trex, exi and blade 400 parts, an axetrexi 450. With some modifications, common sense, and good tools(dremel) you can do a lot of things with about any heli.