Yep, pretty much a 4 piece cab and front clip!
The entire assembly is fairly rigid...tying in the inner fenders to the firewall stiffened it up quite a bit, triangulation of sorts.
The frame is fairly rigid also, crossmembers, steps, and plating add to that.
All in all, I hope that there won't be much difference between chassis flex and body flex...and we're trying to minimize the amount of bondo also.
But, time will tell!