Could not resist.
riyi002 responded fast and in detail to my e-mail(thanks bruisedknux and listentoyoureyes).
Ordered and paid. Now wait for delivery and looking for good black/gold TT sub. I assume 116613 and 16613 models have the same 20mm between lugs. May go for the Toro BP TT sub 116613
though I would prefer 16613, but not finding much new on 16613(most reviews and info seems to be 4 to 6 years old).
Ah well, onwards and upwards.