Yes, it has an extension on the filter. As said, that transmission was build by someone with a very high reputation, I don't think there is a mistake like a missing filter extension, but you never know.
The band adjustment I didn't measure, but both seem to be tight, not loose or so. But I will measure it more accurate. The bands I think are kevlar (from outside the band material seems to be red/orange, not black...) But the varnish in the pan is all black, like a paste.
The billet front clutch retainer is steel, that trans was made for daily driving, high performance, but a driver.
So the filter is also the regular type.
The trans temp is in the pan with a pretty new Autogauge.
Here 2 pics of the filter and the oil. I droped a few drops of the bad used ATF and of fresh ATF so you can see the difference. The used one is still red, but got the dark dirt in it.
The filter is very dirty and those little black pieces I found there are not hard!!! They are soft, like rubber, like a sealing!?! What does that mean?

http://home.tiscalinet.ch/6o4o/727/