You may also want to consider the fact that the stock 2wd springs are about an inch shorter than the 4wd ones to begin with. So if you installed say, a 2.5" spacer lift, you're only going to achieve 1.5" above a stock 4wd. It all just depends what your intentions are for getting more ground clearance, i.e. off-roading, that will determine which lift is suitable for your 'Runner. Good Luck.