The ART arrays were designed to a $350 total budget including the cost of building the enclosure. If you use the M-130's with a comparable quality tweeter I'm sure you will get better sound, but the total cost will go over $500. Here are a couple of more upscale kits, one of which uses the M-130's.
http://www.rawacoustics.com/item__RA8_Speaker_kit,801.html
http://www.selahaudio.com/id103.html
(Scroll down to the Day Tek, whichs uses Dayton reference drivers with a Fountek ribbon tweeter)