Hey there! This is my first mod.
I guess I got lucky when I figured out how to do this, 'cause it seems like no one else could figure it out.
It makes it so Rico can have up to 1000 triggered explosives and 1000 grenades. However, I couldn't find out how to edit the amount he picks up from crates and the blackmarket, so hopefully you have a blackmarket mod that makes both items free.