I see you found the info. yes indeed the ct26 is a toyota name for the turbo on the 13b-t, as well as the supra and mr2. the turbo on the 2l-t is called a ct20.
the supra shares the same inlet as the 13b-t, but the mr2 has a dual entry. some say there is a single entry model. I talked to lot of turbo shops and they say the supra is the only one.
But you will not find a supra turbo to bolt onto a 13b-t manifold. just ain't gonna happen. there is no junkyard ones, if you do find one, expect to pay 2000 min to overhaul it..... and from what I have heard it might be too large for 3b. maybe a 2h would be ok.
other option, buy a turbonectics ct26 exhaust housing that bolts up to the manifold. or buy an adapter and find a suitable garrett.
the size range on garretts is giant. so you got lots of tailoring room.
I also did not want to weld onto the manifold. otherwise I limit my options later down the road.
I found this adapter already made in a shop down south. so I didn't have to get iit made.
The adapter was designed for the supra guys so they could switch to garretts.