bleepo

I have a JBL GTO 300.1 amp (294w rms) running on 8ga wire in my nissan pickup. I was given a 60wx2 phase linear amp that I was thinking of using to power 6x9's in boxes behind the seat.

Will the 8ga be enough if I split it at a distroubtion block? Will I even notice the difference, or should I just run the 6x9's off of deck power? Currently there are only panasonic 4" coxials in my doors, and they're not holding up to 2 10"s very well. I do have 6 1/2's that are going in the door, but I need to do some mods to the door for a fit.

In a 2 door extended cab truck is it worth it to do 4" in the dash, 6 1/2's in the door and 6x9's, or will this be entirely too much mids and highs? I don't have the 6x9's yet, and would have to get creative to find a spot in the dash for 4's.

bleepo

sorry, I'm not sure how to edit my post to add to it.

In addition, my current 4" speakers bottom out. I imagine they are getting too much bass at higher volumes, but are there other possibilities? They're middle of the road Panasonic coaxials.