how much can a '91 tow??

Looking at a 91 Previa. Any idea how much weight can be towed with these vans?? Its a 2wd, automatic.

this is obviously an older post but it's 3,500 lbs. for all previa's,they only take class 2 hitch's i believe,but i know for a fact there all maxed at 3,500 lbs. regardless of engine/drivetrain,etc.