Looking to replace my current sub which is an 8" Kicker CVR. Needs to be comparable (spec-wise) but better performance-wise. Gotta be less than 4.5" mounting depth, require around 0.4 cubic ft. of sealed air space, and be 8" because of the current application as being under the driver's seat. I'll be able to throw about 150-200w rms at it. Any suggestions?