Brilliant mod. I can tell you have based this off the Technical Aqua in GTA Online. I would suggest maybe 500 rounds instead and to make is float-able like in GTA. Nonetheless I can destroy cars very easily. I would say 8/10 because of its low ammo capacity and the car not having water capability.
Really good mod, and huge destruction. But what I realised that the weapons make the car really top heavy. I know It's all realistic and stuff but It would be good if the car didn't tip over on hard corners with Off-Road Sus. Over all can't wait for more updates.