New clutch (brand, p/n?)
New gaskets
18 lb valve springs
Affordable Go karts Fly wheel (brand, p/n?)
Affordable Go Karts connecting rod (brand, p/n?)
GX 390 Carb, UNI filter(not shown), and adapter
You have experience building engines? I bought a Honda alum flywheel and had a hell of a time getting it installed, so I am aware you can mess stuff up just building the engine.
From your pictures, I am thinking you know more than me.
Thanks, Charles