If I had this problem I'd do the following:

1) somewhere on here someone posted how to get extra long cable leads for the extra units and ebay link

2) I run my Jupiter with the cover off...so do the same but simply flip the cover match the screw holes and mount it upside down (sides pointing up) get the correct mounting plugs like are on your orig mining units (or equiv) and with extra long leads on there.....mount the two extras on top..have some 5" fans on the side to blow on the units ..viola

3) or I'd get some pexiglass stuff at a hobby shop and hack together some kind unit with plastic that looks like the MARS Prototype with a big ass Fan at the end

anyway a couple guys HAVE CLAIMED to have done this (one guy had a flakey units on two knc boxes so was playing mix /match and tried 6 on the one says it worked...in this thread someplace)

so anyway if you got the units give it a shot...even if not official if nothing else I'm sure you can 'easily I mean easily' get your $$$ back selling them anyway

but imho if 2 showed up on my door I'd do the above (on the other hand on my unit I'd have to get advice on how to add 2 ports to make 6)

my 2c worth

Searing