I have a Rockford Fosgate Power Hx2 motor. I was going to build a monster 18" but plans changed. Also have a .75" slug TC9 to trade towards.
Dave (teamPSI) does have parts that fit this.
I am looking for larger 3" coil motors like Massive DMX's, Cascade Omega's, BTL tripple stacks. Etc. Just offer up.