HI GM.
I made the cabinet a little deeper to get close to 10 cubic feet. Here are the DATS t/s:

re 7.638
fs 21.5
qts .459
qes .496
qms 6.197
le .448
mms 151.9
vas 23.19

I measured the vas in a 3 cubic ft test box.

I do not know if the kit was sourced to Speaker Exchange from GPA or not.

Old Guy: I taped off the back vent; the recone kit came with a vented dust cover.