Our single speedlight brackets will bolt right onto a Speedo dish. Same screw pattern. The only thing you need to do is slightly enlarge the screw holes on the back of the Speedo to accept the #8 screws we use with the bracket. (11/64 drill bit) Because the Speedo dish is much heavier than our dish, especially if you add a Speedo Grid. I would recommend our "Grip Style single bracket if you decide to go with our products. It attaches to any grip head and locks down very hard to prevent and downward slippage from the added weight.
With our dish there would be no need for you to use a Bowens mount on our dish. Our dish screws right to the bracket and will work with the speedlight. We also have DBL brackets for those that want to increase recycle times or double the power output. The reason Shalaby added the Bownen insert is so he could switch from the Speedlight to a bownens type studio flash.
Hope this helps....
Jerry




