It really is a super "sexy" IFV you've created here! From the radiator grill in the centre of the vehicle, I assume that is where the engine sits. The engine and transmission will presumably be mounted in parallel, i.e. tranmission next to the engine, as in the Transportpanzer 6 x 6. With solid axles, this will not work. You need space to but the transfer case between two of the axles with enough space to allow the axles to move up and down without over-articulating the drive shafts. The minimum distance to do this is about 2.4 meters between axles, as on the 8x8 Späpanzer. The axle spacing on the Ratel, between the two rear axles is 1.4 meters. On your creation all the axles are about 1.4 meters apart. To make your setup work, with live axles, you will have to increase the space between the second and third axle to a minimum of 2.4 meters. The other problem is that the engine and transmission in parallel will be so wide that it wwill uld not allow a passage between the front compartment (driver and turret) and the rear compartment (dismounts).
The vehicle you created would have been possible if the Ratel had independent suspension. Was the technology to build a Ratel with independent suspension available to S.A. at the time the Ratel was designed? Yes. The Brazilian Urutu which was evaluated during the early sixties and which now resides at 1 SAI, had an independently sprung front suspension. More interesting though would have been the French VAB. This was developed during the same time frame as the Ratel. If the designers of the Ratel had chosen to use VAB suspension components, a vehicle somewhat like the one you created coud have been built. The engine and transmission would have been at the front of the vehicle on the left, with the driver on the right, next to the engine. The turret would have been further back however, with the crew compartment behind the turret and the main access doors at ramp at the rear of the vehicle. The track would have been similar to that of the Ratel, i.e 2 meters, and the wheelbase would have been 1.5 x 1.5 x 1.5 meters for an overall vehicle length of about 7.5 meters.
Can the Ratel be modified to look like your super Ratel? Yes, but it would require a major rebuild, more extensive than the Iklwa upgrade. The engine, transmission and drivers compartment would have to be removed and the MAN axles replaced by independent units, like the Oshkosh TAK-4 units, for instance. An extra axle would be added between the first and second axles. A compact, new inline 6-cylinder engine would then be fitted at the left front of the vehicle, with the transmission to its front. A transfer case would take the drive down to the front of the first differential and hence from diff to diff. This is identical to the system used on the VAB. The driver would sit to the right of the engine and the turret, if fitted, would be to the rear of the driver and engine compartment.