You can go on jelabs blog. There is a 2 way design. It uses a Altec 414 as a full range with a WE/Altec 32 horn on top. You can also check out Joe Roberts design of the same. I prefer Joe Roberts design. The crossover is just one cap
You can get the drivers, the horn on eBay and get Sadik to make the cab for you.
It’s something I was considering a few years back.