the seat doesnt have to go anywhere, but, i would take the wheel off both of them, because i gaurantee that the column you bought, has been rotated and now you'll never find center on it, and you will surely break the clock spring when you install it in the car. take your current wheel off with the front tires straight, remove the clock spring and zip tie the center ring so it doesnt turn on you, pull the column out, put the new column in, remove the wheel off that column, remove the clock spring, then cut the zip tie on your clock spring and install it back onto the new column, this whole procedure sounds like a lot, but it really isnt, and worth doing, unless you want to do the whole swap and then break the clock spring and have to pull half of it apart again!! doing things twice sucks!