New Rear Speakers vs Trunk Subwoofer Options

[GTMike]

Hey all,

I am having Rockford Fosgate P142 4" and PPS4-8 8" speakers installed in the doors. I have too limited skills with doors to do it myself. Should I purchase upgraded speaker wire or use what is already there?

Has anyone installed Fosgate PPS4-6 6.75" speakers in the rear? Would P165s 6.5" components work better? I might be able use the tweets in the doors. What else works?

I have a set amount of funds that will either get the rears swapped out or to have a Fosgate P300-12 powered subwoofer (300 watt RMS) installed in the trunk of my vert.

Using the stock 8 speaker amp. I am not stuck on Fosgate, they appear to be the best option in most cases for what I have to spend. Saving 33-50% on eBay.

Any thoughts would be greatly appreciated.

Thanks,
GTMike