I asked a while ago which usdm axles are compatible with a b16b, but got some faded and incorrect answers. My cv boots have been torn wide open for months and I'm leaving for WI on Monday, need a professional answer asap please because I'm swapping these on Friday. None of the shops around here know and need me to tell them exactly what I need. My sargeant just got a jdm itr swap in his 99 Si (his engine blew) and the b16a2 axles were not compatible with it, so I'm wondering if all b16 axles are the same size, and all b18's etc..