As far as your clutch leak, before you get to work, consider removing your clutch dampening system. It's a wierdly shaped setup bolted to the passenger underside of the car. It's not needed and pretty much everyone removes it completely when servicing the clutch. All you have to do is grab this item:
89-98 240SX S13 S14 1 piece Stainless Steel clutch line:eBay Motors (item 180435399238 end time Dec-20-09 18:45:47 PST)
It also removes your stock clutch hardline, clean & simple. I got mine years ago and it cost me twice as much. Works great and makes bleeding the clutch fluid a snap.
Good Luck.