rear speakers for 04 mustang

[bugmanslink]

hey guys i have a 04 mustang with alpine sps components in the front and i am looking for some rear speakers. I was wondering if i could put my alpine sps components in the rear and get new front components or should i get a midbass speakers for the rear and what would be your suggestion for what kind of speakers??

[sjv13]

Depends on your budget. Personally, I would put the sps in the rear and buy a nicer speaker for the the front. Are you using an amp?

[bugmanslink]

Yes i am running it on a 4 channel polk audio amp. Also running 2 10in subs on a separate alpine am. My budget for speakers are around 100 to 150. What do you think is the best bang for my buck??