I used the 05 LGT center diff which takes the male axels. But i went to a junk yard and pulled the stubs off of a 98 Legacy (automatic) and put them in the center diff. Then i was able to use my 02 WRX axles. The stubs will pop out of the automatic trannys (not the 5spd) and can be used to convert to the older style axles. So you can use both.