If I remember correctly, Norh 4.0s use Vifa drivers originally designed for automobiles. Has anyone actually installed these components in their car? Realizing that enclosures play a large part in the sonic qualities of a speaker, how did they sound when installed in a car? Are there other car audio speakers (MB Quart, Focal, Infinity, etc.) that I should consider if I want a lot of detail and a nice, neutral sound for under $500 front and rear? The car in question is a Pathfinder with 6 1/2 components up front and 6 1/2 coaxials in the rear. Thanks.