I've searched here and found answers of both 5/16" and 3/8", so I'm curious if anyone knows for sure what size the transmission cooler pipes coming off the trans are on a 2002 F250 with 4R100? Also, are the flares standard double flare or something special? I am planning to replace my corroded lines but don't want to risk breaking the heavily corroded fittings checking out the flares. Thank you for any help.