Nothing,
there is a kinda hope that the SS will withstand road debris a little better, but probably not much better to worry about. Besides, aluminum is easier to work with and for the price of one SS mesh I will probably fabricate ten aluminum spares...
I'm just kinda exploring the possibilities

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Tour I: 96 GL(sort of) V6 ATX -- mild enhancements
Tour II: 98 SE V6 MTX Sport -- getting better