[Vwdiesel] Rabbit bumper shroud

[Dave Heart]

I'm replacing the front bumper on my 81 VW Rabbit pickup 1.6td "camper". The newer Rabbit bumper across the top has a plastic shroud. The front bracket supports on my 81 do not have the holes for mounting it. Of course I could replace the body bracket supports as well but there is alot of junk to remove to do that.  I could drill the holes in the bracket but it looks a bit tricky to get aligned. My question is if the shroud is beneficial for airflow or mostly just cosmetic? Did some pickups come with this shroud? 
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