I just bought my 1998 SSEi and I plan on replacing the speakers all around sooner or later but not sure what size the front and back are. I have a alpine 7894 deck and 2 alpine type r 12'* power by a rockford 750s amp that are still in my old 88 bonnie that im gonna pull out and transplant one of these days.

probably 5 1/4" components up front and 6x9s in the rear

The back speakers look like they have a seperate tweeter in them or is it just the way they designed the back deck.

i think they're still 6x9s..try popping of the grill to be sure. I've heard of the tweats in the rear on ssei'*. must be the bose stereo???

Yeah its the bose system. The cover looks pretty much flat other than a protrustion on the top with what looks like a tweeter in it. I looked through the grill and it looks like theres a speaker in there.

Yep. There is a seperate tweeter attached to the rear speaker covers. The rear speakers are 6x9'* and the front door speakers are 5-1/4" component'*. If you are looking to get rid of the factory speakers or deck my brother is looking for some bose speakers and/or factory cd player for his SSE. PM me or e-mail me @ bonnevilleguy@mainstreetcom.com if you want to get rid of them. I personally am interested in the tweeters if you replace the one'* from the front doors or rear deck.

I'll sell you mine for 200 apiece! (wouldn't part with them, obviously). I'd try a wrecker. Should be easy to find, or on ebay if someone upgrades.