I put a radar arch on my 23 Sceptre and have since decided to go with a hard top with an upper helm station. I recently listed it on Craigslist for $900. It is located in Texas. Shoot me a PM if you are interested in it. I also have detailed measurements if needed.
Here are some pictures. I have removed the outrigger bases and lights. All of the rod holders are welded to it and will go with the arch.