Ok I fix it but it might be weird.
At first, its quite hard for me with the minigun on the turret, especially for the gun barrel with 2 pixels.
For the next work, maybe The Iveco Superav 6x6(VBTP-MR Guarani) and more 8x8 variants
Sorry, was not not a criticism...
Anyway you are doing really a good job here!!!
If you want I have many versions of vehicles that you may like to... If want just text me in PM.
PS do you have the plain M-134?