yes Jimmy this includes the 2004 read the quote on your post the last paragraph tells you yes this works on the 2004 crossfire with stub shafts. below is a copy and paste from that post. jim

now for the c-clip,,it is used in the 2004 Crossfire and slk 32 Mercedes when unitrax through needswings gets you diff and stubs they machine about .020 out of the grove on the end of the axle so a spring clip will alow the axle to be a push in type like the other Crossfires are now.

Bolt on axles are the same as axle stubs.