The faring speakers installed in my EGC are MB Quart cd113 4Ω speakers running off of the stock HU. Maybe someone with better google-fu can help me identify the power ratings for these speakers, as mbq's website doesn't list these speakers (installed maybe ~2002 or so). Best I can find is someone's random kijiji listing in Canada saying 90W, but I'm not sure.

 

Are they 5 1/4?

 

Yes, they're 5 1/4".

 

Figured out they're 35-90w.

Would the PN4.520D at 100w/ch be overpowering for this application?

I had the original idea of just going with an Ultra-pulled radio from the same vintage and adding tourpak pods/speakers, all with no amp, but when I see the headunit I need going for $400 on ebay (plus $200 for pods and $100+ on a pair of speakers), maybe sticking with what I've got and amping with the soundstream for $109 on amazon is a better half-step forward until I can add the rear speakers.

 

you'd be better off using the Rockford PBR300x2 for a 2 speaker setup. That SS will way over power those speakers. Later on if you add more speakers as long as you stay with 4 ohm speakers, you can wire them in parallel with the fairing speakers and still use the same amp.

 

The PBR is listed as 100w @ 4Ω, same as the SS. Does the SS put more power than that behind only 2 connected speakers even when it's not bridged? My intention is still to add rears down the line, so I figured going with a 4 channel amp now (not bridging) means I won't need to add a second amp for rears.

 

SS amp has quite a bit more punch to it than the RF does. If you're not worried about possible FM issues, then I'd go the route of the PN4.520D no doubt.