The things that I think Ican see that are different include;
Top deck (must be different due to some of the above)
Pivot Block mounts, front and rear
Bulkheads closer together
Narrower Gear Diff, see bulkheads
Narrower Spool, see bulkheads
Ackermann Centre link
Option, steering arms
Originally Posted by MikeXray
the arms look straighter too
They look the same to me.
Once again, the 'corners' would appear to be the same.
I reckon that's around 50% of the components that different.
And if I'm right about the bulkheads being narrower, then the entire car will be at least a couple of mm narrower overall.