will this work???

I currently have 2 rear delco 4ohm speakers that need to be replaced. The front door speakers are 4ohm also. The new delco rear speakers I want to purchase are 8ohm. Will there be a problem running 4ohm in the front and 8ohm in the rear? I have a 2000 pontiac grand prix with factory unit and speakers.

No there shouldnt be any problem with that. Your actually running less amps that way.....