i need to change my front shock and want to know if i need to disconnect the driveshaft or can i get enough leverage on it to take the shock out of the hub

 

Just under the hub bolt that holds the shock on to the hub and plenty of plus gas sprayed on and lever the hub off it using a scaffolding bar or similar on the bottom strut. Have someone to hold the hub though so you don't rip the cv boot apart. Be easier to take the calliper off too and rest it on a spray can saving taking it completely off and bleeding it.

 

I wouldn't reccomend it mate, you'll probably spend ages fucking around only for it to get stuck, far easier just to undo the ball joints and take out the shaft from the front diff which is a 30 second job itself.You'll be fighting against the ARB to get a big enough gap to get the shock in/out otherwise.
As above depending on your brake line length you might get away with leaving the caliper on, but watch you don't stretch the hose.