How can I determine what type of clutch cylinder is on a Hyundai Santa Fe 2007?

An auto mechanic who was giving me an estimate said if it was an "outer" type cylinder it would be very easy and cheap to repair, but if it was an "inner" cylinder it would be very expensive.

In general how can I find out what type of part is in an old car... is there some online repository of repair manuals or something?

The car is 4 wheel drive. I found some videos on YouTube about the clutch system but couldn't understand them.