Vid card question..........Again

Ok. So next on my lis to purchase is a video card. I had my heart set on a superclocked 8800 GT but the damn thing is out of stock. It was a nice price at 260.00 US with 512 onboard. Anyway, the more I've looked the higher they get in price. I'm not made of money obviously which leads to my question....
Whould I get the same (relitively speaking) effect if say I bought two 8600's, 512-7-- onboard and did the Sli thing? Or is this foolish and I should start donating plasma, sell my Jeep and go into male prostitution to get a damn 88!?!?
Sorry. this is getting fraustrating.....
Mike
Whould I get the same (relitively speaking) effect if say I bought two 8600's, 512-7-- onboard and did the Sli thing? Or is this foolish and I should start donating plasma, sell my Jeep and go into male prostitution to get a damn 88!?!?
Sorry. this is getting fraustrating.....
Mike