Heres a short summary:
SD released SSAC knockoffs.
Good reviews.
Bait and switch for OBX heads, they're ****, dont work.
Complaints happened, SD re-released the SSAC knockoffs.
In the end..... SD = SSAC which sorta equal SLP.
So you will find you will need to trim the rear part of the crossover to get it to fit and then it'll be okay. Nothing big for $205 to your door + $50 for Napa band clamps and some copper RTV.