Have a look at a paid adjustable vehicle destruction system for Unreal Engine that will help you develop an awesome shooter. 

Are you working on a game? The car shooting system helps users set up destructible physical vehicles for all kinds of games. The developer's goal was to recreate the mechanics found in modern shooters. 

Features:

• High-Resolution Textures
• Substance Painter Texture Packaging
• 100% Blueprint
• Modular Parts
• Adjustable to Your Car
• Full Car Destruction 
• Cars Can Be Burnt

Texture Sizes:

• 512x512
• 1024x1024
• 2048x2048
• 4096x4096

You can learn more and get the pack here.