so i tried installing my front driveshaft and found out the fj62 flange is different than the IFS that was originally on my 4runner. after some research i found that the fj80 rear driveshaft flange is the same since i couldnt find any 62s around, a quick craigslist search got me a rear driveshaft for 20 bucks. i modified my factory tube to accept the fj80 flange.