Jeff will customize the height shorter or taller. Just like lifereef. He's already custom cut me an extension making my skimmer 42" now.
MTC also can make a much larger dual venturi external models which are amazing. It's not listed on his site.
Oh, I know. They do all kinds of custom stuff, as well as usually fix anything that ever breaks. That was mostly tongue in cheek...
edit: BTW, I've had your MTC review thread open for the majority of this week as I slowly digest it there... Thanks for the write up!