In my search for some subs I've been pointed to this forum. I'm looking to replace a set of 12'' Type-R's. The Type-R's were a decent SPL sub but I'm looking more for SQ. I'm hoping to achieve the SQ and SPL same as, or close to a W7. I listen to 50/50 rap/rock. As of now my plan is...... 2 12" Q Series 2ohm Box & Amp: 2 Alpine MRD-M1005's (each 1000x1 at 2ohm) Sealed rectangular Box 1.3 cuft per sub 1999 4 door Tahoe. behind the second row, subs facing downwards Also... I have no idea what the BP does. Whats recommended RMS with that option. Thanks for the help Alex