Hirschmann aerial fitting

Hi all.

does anyone have any pics to show the exact location for fitting a Hirschmann aerial to my front panel. It is so far undrilled and I want to get it right first time. also looking for advice as to getting the oval hole drilled

one of these.....

 

I have found this.
http://www.vw-t2-bulli.de/data/documents/antenne-hirschmann-auta-2250-ls-11.pdf

 

and this
http://www.vw-t2-bulli.de/data/documents/autosuper-grundig.pdf

 

and this..
http://www.vw-t2-bulli.de/data/documents/antenne-hirschmann-auta-2250-ls-11-detail-300dpi.pdf