You can do much better than the Pioneer stage 4 components -Look at Morel Hybrid 502 - Morel 5.25" 2-Way Component Speaker. JL Audio component speakers are good but you can do much better for the same money. Look at both Morel and Focal for high end component speakers.
JL Audio HD 900/5 is a...
Morels are great speakers, their staging is excellent. I have a set. Of Morel Tempo 6 comps with the tweeters in the doors also, I swear that the tweeters are in the A pillars which I couldn't get my tweeters into also.
Take a look at these CL-6.25 - CDT Audio Classic Series 6.25" frame 2-way component set (WoofersEtc.com - CL-6.25 - CDT Audio Classic Series 6.25" frame 2-way component set). You can use them as coaxials or components.