today i went to a north dallas stereo shop ( earmark) ask for price on polk DB6501 install and dynamat the door.polks get good reviews here and on other sites.He tells me polks are no good ! that I need JL audio speakers and that stock head unit won't drive them and I need a small amp they don't use dynamat they use hush mat and all this is only going to cost me $972.00 +tax.is this price high or am I just out of touch on pricing.