engine conversion parts

[alex_in_az]

I'm looking to upgrade my CG125 engine to a 225, I already have a 67mm piston and jug so I figure the listed parts below are all I'll need to convert it. can anyone see anything else I need?

studs
http://item.taobao.com/item.htm?spm=a230r.1.0.0.NA5Ud6&id=14398917907 (http://item.taobao.com/item.htm?spm=a230r.1.0.0.NA5Ud6&id=14398917907)
rocker arms
http://item.taobao.com/item.htm?spm=a230r.1.14.80.BExTI1&id=13537793963 (http://item.taobao.com/item.htm?spm=a230r.1.14.80.BExTI1&id=13537793963)
clutch
http://item.taobao.com/item.htm?spm=a230r.1.14.123.OYURS4&id=16333065857 (http://item.taobao.com/item.htm?spm=a230r.1.14.123.OYURS4&id=16333065857)
cylinder head
http://item.taobao.com/item.htm?spm=a230r.1.14.85.bVC3A2&id=37337451924 (http://item.taobao.com/item.htm?spm=a230r.1.14.85.bVC3A2&id=37337451924)
push rods
http://item.taobao.com/item.htm?spm=a230r.1.14.200.xSemyB&id=19936552795 (http://item.taobao.com/item.htm?spm=a230r.1.14.200.xSemyB&id=19936552795)
crank
http://item.taobao.com/item.htm?spm=a230r.1.14.274.xSemyB&id=18310363727 (http://item.taobao.com/item.htm?spm=a230r.1.14.274.xSemyB&id=18310363727)

[Weldangrind]

That's exciting! Can't wait to see the process.

Do you plan to hog out the case to accept the new cylinder, or are you going to buy new case halves?

[alex_in_az]

from the looks of the jugs, the casings are a common part. I haven't split them yet but the spacing on the cyl studs looks the same. I can get the casings hogged out if needed. The cost of the shipping may kill this, I can still get a complete CG200 for $370ish off ebay