so the steering wheel wasn't sideways till they changed the clutch?
i'm not too sure about this, but i'm assuming they changed the clutch by either pulling the engine out the top, which when they reinstalled it, could have bumped the rack causing problems
or if they did it from below, they might have to remove the rack (not sure about that one, my old grand prix had the rack attached to the front subframe) to remove the subframe, which then they didn't install it right. maybe when they did put the subframe back in, they put it in wrong, and it's been shifting causing stuff to bind, and making your steering wheel off to one side
the clicking might be a cv joint (driveshaft) which is needing replaced
i have a ching ching (bling-bling??? nah) sound when i hit bumps due to my driver side sway bar link being broken.
i don't know much about contour subframes, so i dunno if that helps ya any....
