I used windshield poly, the guy was at my shop with that nice electric caulking gun (stuff is hard to squeeze) changing a windshield, so I asked a favor and it helped a lot with the hop and drivetrain movement, did front and rear.
I myself and some of the guys I know with crazy fast civics use the stock axles cuz the upgraded ones still broke almost as much with no warranty so a $60 replacement is much better then $400 (they keep spares with them at the track). I have broke my whole diff housing thou as well that sucks, fyi the whole assy from fords is much cheaper then buying separate parts, but of course atb is the way to go.
