Hi one of my rear deck speakers is blown out and I wanted to put Infiniti Kappas in to replace them. So I ordered the 6x9 in speakers and when they got here went to put them in they wouldnt fit!! I then measured liek I shouldve done before and realize the stock speaker is a 5x9 Has anyone replaced the reardeck speakers? is there any way to replace the speakers without using the factory speaker enclosures(the black box with grill that fits on the speaker)

I have installed 5x7 kappas in my stock housing, email me for more info, I might sell them

I got a pair of Lightning Audio 6x9's (Pretty low-end but better than stock). I had to do some serious bending/cutting of the rear deck to get them to sit flush. The 6x9's also wouldn't fit in the factory enclosures. I used the bottom half of the factory enclosure, and set the 6x9 with grill on top. Looks near factory and sounds very good. Be sure to use the 4 ohm ceramic resistor for the factory speakers to make your 4-ohm speakers 8-ohm. Take out your rear deck speakers first and look at what you have to work with. You should be able to get some ideas after taking a good look at the rear deck setup. I heard that 5x7's can fit in the factory enclosures, to maintain that stock look. Good luck!
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'94 854 N/A.

When I thought one of my rear speakers was blown out, it turned out that the glue holding tweeter magnet deteriorated and the smaller magnet fell off onto the larger speaker cone. After I glued the magnet back into place, the speaker worked fine.

I've read that others needed to do some cutting to get the larger speakers into place.

I bought a pair of infinitys that are 5x7/6x8. Haven't installed them yet, but Im hopeful that they will fit.

Yeah, I know, not really a helpful post but whatever. :)

I replaced the factory rear decks in my 854 with Polk 6x9's It took a little modification but I wound up using the bottom half of the factory enclosure.