In the 1980s that fillet would have run the full length of the front fender. How about this?
http://www.thesamba.com/vw/forum/viewtopic.php?p=3966775&sid=e992301164daf93f90992a 2b14978193#3966775
It's after the A-pillar and being closer to the driver's eye, it can be smaller than otherwise.