soo... this may have been asked before but idk what i would search if i were to search for another post like this one.. so is there any way that i could hook up my home receiver in my car... and if i could do that i could connect my home speakers to it... haha i feel so cheap doing this.. but it might sound better than the stock stereo if i position them right. plus i could use them if i had my car parked and i could play them out the back of my trunk like if i wanted to do a little tailgateing or something.. lol so yeah if this can work how would i do it?
and if it matters i got a 2003 bonneville SE

How long of an extension cord do you have?

You'll run out of 110V power at the end of your driveway unless you put in an inverter.

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The receiver is going to suck up a lot of wattage, inverters that put out that much can get fairly pricy

so would this inverter do the trick?
Vector Power Inverter 400 watt - DonRowe.com
the wattage advertised on my receiver is 240W total power so its probably not even 240W actually

is that the output to the speakers or on the power input label?

Yes the speaker output wattage and the power wattage needs of the stereo itself are two totally different things. I have a feeling there will be alot of background noise as well drawing current from an off the shelf inverter.

As well, it really going to tax your alternator. Car alternators put out minimal wattage at a idle and stop and go traffic. If your stereo needs 240 watts let say @ 120 Volts AC, and given resistance from connections etc., you can safely translate 12vDC wattage to 120vAC with a factor of at least 10x (May or may not make sense to you depending you know Ohm'* Law LOL) So the inverter will suck more than 24 watts of 12vDC to make 240 watts of 120vAC. Thats a heck of a constant load on an altenator thats at or near an idle alot of the time.

alriight lol so from how this is sounding it is a bad idea.. so i guess im not gonna do it.

you're off on that a little. Power (watts) = Volts * Amps. The stereo would still draw 240 watts at 12 volts, it will just need 10 times (assuming 100% efficiency of the inverter) the current to do so.
IF the stereo drew 240 watts @ 120v, it would be consuming 240/120 = 2amps. Assuming 100% efficiency (which we know would never be true!) - 240 watts @ 12v = 240/12 = 20 amps. Not super bad, but the real draw is likely anywhere between 25-30A @12v after you take loss into account.

All that just to hear very high pitched (and loud) whining and buzzing noises from your speakers, because power inverters produce very dirty power.

Don't waste your time.

LOL! I was quesstimating. And as we mentioned the whine is a pretty sure thing.

just imagine when you were young and listening to a good ole record on the turn-table... the noisey "nothingness" between songs and at the end is what youd get when it powered up.
If thats ok with you then proceed... id recommend lookin on ebay or craigslist or shopping around and getting an ACTUAL car audio system... you would be much happier and trust... ive done my fair share at being the backwood dj at the fish-hole out in the boon-docks and IF its done right, you wont have any complaints until the battery dies or the car runs out of gas lol