typeid can be anything from 0x00000000 to 0x0000FFFF and it must unique, by unique i mean there should only 1 entry for that id in the rpk. after you add this kind of block in the engine's rpk, you can proceed in making ur kit java.
As for java of the kit, ALL THE PARTS MUST BE IN CORRECT BUILDING ORDER, if you f*ck up the order the engine won't come complete from the crate.
Hope it helps.
Do we put this in the engine RPK are the javas? Added 4 minutes later: