Had a build with 2 12Type Rs, sealed at .9 cubes each. Hooked up to a Kicker zx1000 and a 6 farad cap. For the price of the setup, it is a beast. Whole-car flex, rear window and roof gets crazy. Even a tiny bit on the steering wheel below 30hz, remember sealed. Mad flex and LOUD AS FUCK 38-46hz. I sold the car when I got the new one, but the dude is around here. I'll post vids (if I can figure out how to do it) at least pics on the Builds thread in a couple days. Got these subs new $100 each, show me a better value.
EDIT: Car is a 2000 Mustang