I have also refitted the satori wo24p-4 woofers to the underseat IB mounting locations, the slight loss of sub bass performance is far outweighed by the excellent midbass performance to die for!
I also cut some 12mm floor pieces to lose the factory carpet to IB location join... now to get some floor mats to suit! The 12mm birch ply pieces are cut to overlap the factory carpet with a chamfer on the lower outside edge for the carpet to tuck into, the inner 210mm cutout is surrounded by a recess that measures 245 and 6mm deep, this then had the drivers mounting holes over drilled slightly to 6mm, i then trimmed it in charcoal carpet to vaguely match the factory floor carpet
the cables are all techflexed already, I have just made extensions and implemented cable/terminal protection with heatshrinked soldered joints to the drivers terminals, and amass xt60u connectors, I have also fixed the factory seat plug down also with a screw down cable tie fixing, I also provided some extra cable protection in the form of tesa tape where the cable goes up the basket and splits left and right to the terminals which are on opposite sides