Mines a 70 but placement of fasteners might help. I chose to hide mine. My apron didn't have that much of a gap though. To get to them I drilled holes thru fender lip. I will have to loosen the lower fender bolts to remove it, but how often should you have to pull the motor? That gap will have to be filled with a strip of metal unfortunately.
Thread here:
http://www.germanlook.net/forums/showthread.php?t=10190
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1970 T1 W/MassIVe 2913cc RAT/?EFI? w/direct fire (very soon) and 915 trans
1962 SC 1776cc SP 944NA brakes, 993 wheels
VKG