I've pretty much finalized my decisions for the front upgrades. I'm going to put in some Alpine X-series SPX-177R comps up front. (75W RMS, 200W peak, 4 ohm nominal impedance). For the amp, will a MRV-T320 (80Wx2 @ 4 ohms, 140x2 peak). That amp should be powerful enough for the comps, correct? Also, how intensive is it to install the 6.5 inch drivers into the stock door locations?