I'd have removed all of the material then...
Saw a Cosworth cam cover with Bremi single coils (out of a BMW iirc)... looked good. Tried to fit some of them to my CVH but they're too big...
If i was to butcher up another cam cover i would take the bars out but as it was trial and error i left them in for strenght,
to run single coil packs it would b a change in management,