Hmm... no replies.
Well, I tried to gently pry it apart and it aint budging, so I think the next step is to break out the bandsaw
If I can keep the flanges on either half intact, it will just need some screws for reassembly.
The goal is to separate the MAF tube, make a hole in the back, and have the largest cone filter I can fit in inside the box.
Despite the odd shape, should be able to fit a pretty decently sized filter in each, possibly with an angled flange (K&N sells those).
Anyway, should work well, net a little more power, and retain a nearly 100% OEM look.
Might do the modshack fangvents for additonal cool air induction too.