Conclusion: Clear upper-mids and highs as long as you install bass blockers. However, I would recommend getting 6.5" speakers instead if you can fit them. These 5.25" are really just 4.25" with extended mounting tabs. A set of TS-A1673R will replace these for me soon.
Conclusion: Great sound! I put them in 87 Mustang. Sonic Electronix is the only place i will buy stereo equipment in the future. They are very easy to deal with. You can't go wrong with these speakers at this price.