I have the Fastrax QD protector on my '14. Well engineered and very sturdy. The bottom plate is riveted to the belly pan, which makes it very rigid. No other plate is needed. I also installed the Fastrax tunnel protector that reinforces the weak spot by the footwell.
the fastrax brace is designed for a very simple install. there is no support under the fender to keep it from hitting the belt. with this brace it will hold the fender down. You won't need a bash plate