EC200 01 vs 06 cases

[Thompo]

Hi Folks,

Working a friends 2006 (ish) EC200 that had the rear section of the casings crack IWO the swingarm pivot bolt, resulting in the engine bobbing around the frame and wrecking all the mounts on the engine.

He got some replacement cases and a gearbox from a 2001 bike, thinking they are the same.

Have both engines out and see a few differences.
Different generator cover and casting around this area.
Different casting IWO the output shaft.

Any other differences to note or that will affect re-assembly?

Cylinder seems to fit ok, we have the gearbox it came with in and working.
Reeds fit.

Havent been able to break the crank bolt yet to see if the crank shaft will swap. Looking at the diagrams, bearings are similar size, just not sure on over all length of the crank.

Any Help appreciated, probably similar issues for 250/300 of similar years.