Hey mate, nice to see another kiwi here (although I'm in London). BK sub are modern subs (maxi case), I presumed what your grand father would have had would be 5512, 5513, 1665 (Seandweller). If you would pay homage to him it might be ideal to look at these references. But there are NO "out of the box" reps for these 4 digits references so building one or buy one from M2M here or other rep forums might be a solution. Any questions PM me we can chat more.

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