I am currently replacing my stock front speaker/tweeter setup with Blaupunkt Blue Magic CX 170s. I’m a bit confused on two things...whether to use to the stock crossfaders in the Matrix or to use the in line crossfader Blaupunkt included. I’m also deciding how to mount the speakers, and this requires me drilling out the old speakers’ rivets. When I’m installing the speakers (with the metra adaptor rings) should I use rivets or something else? I really don’t want to do a ghetto setup with wood screws... (UPDATE speaker rivet problem still going on...how do I use lock nuts, bolts, and flat washers to fit the adaptor plate onto the door)

Thanks oppo.