125-200cc How exactly 144cc makes?

If you don't know, don't do the mod!!! Give it to a trusted shop or get Wallybeans kit.
Yes it is money but it is a quality item.

You need to machine the squish area wider and re profile the chambers head. Again if you don't know or the shop don't know don't get it done!

i will not do this by myself, i trust it to guy who is specialist in this. BUT he never done it with husky, and no one does in my country, it will be the first kit from 125 to 144. And i trying to understand all specific, to consolidate it with my tuner man, to be sure everything is right.

Hi mate, I got a new husky 144 kit complete with piston and head. If you need any reference dimensions I can help you on that.

so it seems like we know exactly what to do for now ! and will make first 144cc in Ukraine. Epic)