Yes 2 8" subs I originally had in mind. I've never heard an 8 in person! Just videos of the sd8 and sa8 online and reviews etc. Ill get some measurements when I get home. There's a guy who stuffed a ported box with 2 SA8'S behind hos seats in his regular cab but he's given up much more leg room than I'd care to give up. Ill get measurements and start my own thread when the time comes. But I'm leaning towards sundown SD10's...2 of em. They have a 1" deeper mounting depth than the shallow sub I'm using now.