The panel where the rear speaker is placed. I was thinking of trying to fiberglass something that would fit it in.

but I'm talking about this:



The speaker is too big for the tiny hole that is in that plastic panel thing

 

It wouldnt fit with the grill off it?

 

Nope The grill is actually really compact surprisingly, it doesn't fit, and it only adds maybe an inch of height and not width.

 

you can always cut the factory plastic thingy with a dremel or whatever to make it fit but at the same time for an infinity speaker its probably more trouble than its worth. And for the amps you should get. I used a boss 1000 watt for a while. They arent the best def not but for the price they are ha. Jensen is about the same way. Kicker makes good ones if you can afford it. I'm using a Lanzar 1600 watt 2 channel and it sounds fine. basically with amps you get what you pay for.

 

Dude, I don't know what you're talking about, the Infinity Kappa 6x9 sounds pretty good for the money you put out for it. I've installed a pretty good number of these and the only time they didn't sound great was in a car where the moron who owned it decided he'd hack up his rear deck before bringing it to me. I'd double check the speaker in the factory mounting position, 9 times out of 10 there's a way to make it work, just means you've got to be a little creative.

 

Lol, ZMC... that is the worst list of Amps Ive ever seen. As a rule of thumb, if it comes from a fleamarket. Its not worth it, same if its sold at walmart.
The infinity Kappa series is a great speaker. Some of the best car audio Ive ever heard has come out of them. Good choice.