Tacotex

I was wondering if anyone could shed some light on a wheel question. I'm looking at some wheels for my '04 Xcab 4wd Taco. It's got the stock alloy 5 spoke 16x7s on it. The wheels I'm looking at are described as stock for '03-'07 4runners 16x7s. My concern is that I need to keep the same backspacing or less to prevent rub. I've searched like a bitch but can?t seem to find any definite specs on the backspacing for these 4runner wheels, and I?m not sure the seller is giving me the right backspacing measurement (he says they're 5" backspace). Any help is much appreciated.