Hard to tell for sure but that looks like a normal BB cluster with a bridge and the gap filled in and smoothed out, if that's the case you should be alright drilling through the filler which ain't doing much, probably worth confirming that first though.
Hard to tell for sure but that looks like a normal BB cluster with a bridge and the gap filled in and smoothed out, if that's the case you should be alright drilling through the filler which ain't doing much, probably worth confirming that first though.