I replaced the front and rear doors with the focals, and the lift gate I used a much cheaper set of speakers that could hand the same rms as the rear doors (think it was a cheap set of focals as well). The front door speakers I believe have a built in crossovers for the tweeters, no bass blocker needed.
I did not want to mess with separating wires and having to run wires throughout the truck back to the lift gate since speakers were in series. I used a reverse harness behind the head unit down to a JL Audio XD 400 (70 watts RMS) through speed wire and back up to head unit to another harness. This way the set up is completely reversible just unplug the extra harnesses and reconnect if I ever want to remove the gear. Works great and there was no cutting of any factory wiring. To me the extra $80 spent on the lift gate speakers was worth the time saved in not running all new wiring to the back.
If I remember correctly there was one extra wire that was missing out of the added harnesses for stereo lighting that I had to re-pin.
Harnesses:
https://www.amazon.com/gp/product/B0074VDYXI/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00009UHKW/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
While this was all a huge improvement over factory, I still felt it needed help and I installed the FIX 86 before the amp to flatten the signal from the stock head unit, and I was then satisfied.
I did not want to mess with separating wires and having to run wires throughout the truck back to the lift gate since speakers were in series. I used a reverse harness behind the head unit down to a JL Audio XD 400 (70 watts RMS) through speed wire and back up to head unit to another harness. This way the set up is completely reversible just unplug the extra harnesses and reconnect if I ever want to remove the gear. Works great and there was no cutting of any factory wiring. To me the extra $80 spent on the lift gate speakers was worth the time saved in not running all new wiring to the back.
If I remember correctly there was one extra wire that was missing out of the added harnesses for stereo lighting that I had to re-pin.
Harnesses:
https://www.amazon.com/gp/product/B0074VDYXI/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
https://www.amazon.com/gp/product/B00009UHKW/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
While this was all a huge improvement over factory, I still felt it needed help and I installed the FIX 86 before the amp to flatten the signal from the stock head unit, and I was then satisfied.