What are people doing to block debris from going into inner fender?

[fusion]

I'm talking about the area between the fender and firewall area as shown here

 

 

I see that apparently there was a factory inner fender but they are impossible to find and I'm only concerned about this back area.  I suppose I'll try and fab an aluminum sheet or something 

[Kennysgreen280zt]

Skillard makes some aluminum ones.

 

https://skillard.com/products/280z-rock-guards

 

They look like they'd be pretty easy to fab also.