some new hf boxes......

Hi Bee I am back...
as you can see in the picture this is one of our tower. We ar surching for some good Tops. I would prefer radial horns maybe 4 of them with 2" or 1" drivers. But saw yourTopbox design looks also good. If you have any idea or anybody else or god a good plan for Topbox feel free to answer here.
P.s: The double 15" in the middle is your design Bee if you remember ... just airhole a little bit modified. I put 18 sound speakers in there and run them with 2800 w . They work like Hell .
So everything over the double 12 should be thrown away , meaning the vocal 12 and the tweeter box with the Hohrn ... therefor I want to install a good top solution. It should run from roundabout 2000 Hz up to open end ... propositions or solutions welcome ... and thx in advance guys.

greetings in the name of the one and only