Will the BK-20 kit work with Lowther DX4?

[gnugear]

I got a pair of Lowther DX4s a few years ago and built some BIBs for them. They sound fantastic and I have zero complaints ... but I've got the bug to mess around with different enclosures. Long story short, divorce resulted in the loss of my garage, tools, workspace etc., so I was looking at the Madisound Bk-20 kit as an enclosure that I could drop the Lowthers into. Would that combination work? I'm not too good at figuring out the math involved with matching drivers to enclosures, so I thought I would see if any of you guys had suggestions. By the way, my original plan was to build the Sachiko but that just doesn't look like it's going to be a possibility for me anymore