I have reference components in my 6th gen civic coupe and i had to dremel the plastic behind the speaker magnets off a bit.
I would not recommend reference speakers based on my personal opinion on them. I actually regret buying my set (5.25 component set for $125 new) since it lacks good midbass, and the tweeters are too harsh. This bad quality is all from their poorly designed crossovers for this model (people have used kappa crossovers and they say it helped)
i would invest in a higher model such as the kappas, or looking into crystal or focals (something even nicer)
and tidbit about SONY- their products did "suck" before, but they have been redesigning they amps and are performing much better. ( i have two of their amps) I too was a sony hater until this past year when they stated coming out with affordable amps. I had lanzar 1200D and RF 800a2 before this amp, and my sony 1600GXD performs better then those, and puts a lesser load on my alternator. I have never heard their speakers