Need Stereo Help, new and stumped Options

[TrdKing]

Ok I went and picked up some 6 1/2" speakers for my celica and came home only to find out about the front being 6 3/4" and the backs 5 1/2"?

What do people actually put in for speakers? size? power? brand?

I bought a decent deck and was just looking for some cheap speakers that sound good to go in with the deck.

After looking at the back speakers is there anyway to actually fit an aftermarket speaker in there they seem to mold to the plastic mounting piece. Could I buy a 5 1/2" and put that in their? Will it require any modification?

I read through the front 6 3/4" inch front speaker install and was wondering is that what everyone is doing? Is it that hard? What about the back?

I bought some Performance Teknique speakers for 150 CAD but they are all 6 1/2"
but heard they arent that great. I am going to bring them back and probably get some panasonic speakers to go with the panasonic deck.

Please help me out I dont want to buy crappy stereo stuff and I would prefer something I can put in myself.

[snadman]

No!! no no no. lol. OK the easiest way to explain it is a 2-way has a woofer and a tweeter all contained together so the sound projects out the same. 3-way will add a "mid" tweeter and 4 way is like a 3 way with extra highs. I think that's the right way of explaining it so it's understandable. A 2-way component system will have a crossover that divides signal 2 ways. One is just the highs and gets sent to the tweeter and one is the mids/lows which get sent to the woofer. A 3-way component system splits the signal 3 ways, high, mid, low and each to its own component (tweeter, mid-speaker, woofer respectively). Component systems are always ideal because you can actual plan out the sound image as it's projected from the doors.