Square screen CTC-2B?

[miniman82]

So I have this spare CTC-2B chassis I got from Chuck Pharis, and I'm wondering: can I use this thing with a square tube? I mean I got it for spare parts in case something terrible happens to my nice chassis, but wouldn't it be sweet to have a square tube running on it? If for no other reason just to see what it would look like. It's been slightly hacked already, someone put a compactron HO tube socket in there and there was a 6JS6 where the 6CB5 should have been. I'm already converting it back, but I'm just pointing out that I don't have to be overly worried about messing with it.

So the question is are there any big neck delta gun square tubes out there, or would I be stuck trying to adapt convergence stuff for the small neck tubes? I unfortunately don't have a spare CTC-3A chassis to use with this crazy scheme, so I'd have to either borrow the one from my 21-CT-55 or make another one. That's fine with me, so if someone out there has a spare 19-25" tube with the stuff still on the neck I'd give it a try.