Hey guys, new to the forum. Just picked up a '21 Alpha and it has 4 of the JL speakers on the tower. I would imagine they are probably wired in parallel but I haven't pulled it apart yet. Has anyone installed 4 REV 10 HDs? Figure a SYN-DX2.3 HP amp will do the trick. Wondering about placement, brackets needed for them to fit, stuff like that. Appreciate any insight anyone has!