Do it right the first time and just get a nice pair of components, the stock tweeters sound like ass in my opinion, both base and Monsoon.
And I'm pretty DAMN sure that wiring an extra tweeter in, say the stock one with the cap in line as a HPF, can fry your HU's internal MOSFET amplifier. 1-2 watts is even a lot for those little things, and that's exactly how a buddy of mine ruined a new Kenwood HU, wired in coaxials in the front and back, and for some reason wanted his stock tweeters to work too (ears bleeding anyone?), so wired those in parallel.
Even though he was conservative with volume, as in neither of us ever heard any clipping etc., thing lasted a week.
And seriously, it sounded horrible, don't mix aftermarkets with our crappy stock speakers or tweeters. I'm just confused as to how anyone could think even the Monsoon system sounded decent when compared to even some old Infinity Kappa's I have lying around. Polk audio MM's all around and Fi Q's for low end ftw.
