I'll probably go with the 1m turret version on the right. Here the lower ASLAV 8x8 hull has had the 2nd axle section removed (about 31mm). The upper AVGP hull has had a 20mm section removed from behind the turret.
You may be wondering why not just make 1 cut, and remove 20mm from the rear. The reason is that the rear upper hull has a beveled edge to fit the rear hull, plus the angle of the hull plate needs to match the lower. Its actually easier to make 2 vertical cuts.
The C-19 will have add-on armour, so I am not fussed about the largish gaps that will need filling, as I can manipulate the AoA panels to cover the seams. Overall, its not much shorter than a standard AVGP, but I think the result will be pretty noticeable.