Pre-hung door with metal studs

I need to install a pre-hung door into an existing wall with metal studs but I am not exactly sure of how to start. I have done wood framing for a door for a new wall but not with an existing wall with metal studs. The door that I am going to be hanging will be a 30in Hollow Core door from Home Depot.

Should I use wood or metal studs?

Should I just cut the drywall to the size I need for the door then install the studs in-between the two sides of the walls or should I cut the drywall back to the last studs that do not need to be removed then do the framing for the door?

Thanks in advance.

 

I take it that this is non-structural steel framing. Since you're cutting a hole, re-frame with steel studs BUT turn the studs at the opening so that the channel faces the opening; then rip treated wood studs as fillers for the channels and fasten. Use a wood header it you like (alloting for king & trimmer is optional). Ensure that the bottom and top track are secured on either side of the opening before inserting studs. Use pan head framers to fasten the stud to track or pop rivets.

 

Since you are installing a 30" door, the spacing between the metal studs won't allow for a clean install. So, since you have to rip two of the studs out anyway, proceed as 2000 stated. It is much easier to install against the wooden materials than metal. Set the studs at 32" inside to inside and a nominal header (non supportive) at 81 1/2" from the floor and the install will be just like in a normally framed house.

 

Thanks everyone for the reply. The reason why I am using a 30in door is because the rest of the doors are 30in and that I only have 41in available on the wall to place a door since the rest of the wall is over the stairs.