Summary: I bought these to replace the rear speakers in my 85 GMC K1500, and they didn't fit. My bad on that one, not docking any stars for that, but it's more of an FYI. The sound quality, however, left much to be desired. Quality wise, these aren't even as good as the $40 3.5" speakers I got for the dash.
Pros: + If your only other option is some 1980's era stock speakers, these are noticeably better + If you're not an idiot like me, these might be a straight bolt-up to your vehicle
Cons: - Not only devoid of low end sound, but it also makes the mids sound tinny somehow - For being seemingly designed for retro vehicles, the mounting depth is such that I don't know what this would actually fit cleanly
Summary: 4x10" speakers are a very odd ball size that make quality sound difficult. Knowing this going in to the purchase I thought that kenwood did an excellent job at creating a quality product that produces good sound at a fair price.
Pros: Great option to replace old factory speakers. Good quality sound
Cons: No fault of kenwoods just a horrible factory decision in speaker size
Conclusion: I bought these speakers for replacement for my 1985 Fiero. they sound great! the only issue was I had to attach the old wire connectors, no big deal, and I couldn't use the original mounting scews, after some work, they were installed and they sound as good or better than the originals.