h2point2

ok so i got a horrible vibration/banging noise today. knew it was axle or at least thought it was. havent got the new axle in and running yet, but my question is.... its passenger side axle when i put it into the tranny and lock it in there is some "play" like up and down like the diff is loose or maybe it is suppose to be like that im not sure. can someone help me out on this. its a gsr tranny on a b16a in a 93 eg. im going to pick up a 94 gsr axle but i can also use any 94+ axles right the 99 si didnt fit, it was to small/short.