The way I mounted the grills, they do not come into contact with any other metal.
They are between the plastic original grills and the plastic bumper...no corrosion issues at all...
CH - I hear you! Despite doing almost all of my own maintenance and repairs, removing the front bumper cover is the ONE thing that I have also been somewhat afraid to touch for fear of damaging something expensive or not being able to get the dang thing back on. I guess I'll take a look at some of those YouTube videos and maybe give it a try...
If I can do it, so can you!
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2001 Boxster S Lapis Blue
TS Cat Bypass Pipes and exhaust
iPad Mini Dash Install
DEPO Tail Lights