You'll almost certainly have to remove the clutch master cylinder to replace the clutch line. You can get the line in place with the cylinder installed, but the danger of cross-threading is very high unless you start the treads with the cylinder removed.
One of the trickiest parts of this job is finding the correct path for the hose in the engine compartment. It's pretty difficult to see where the hose comes through the bulkhead. First, the battery tray has to be removed. It's also pretty much necessary to disconnect the front two of the three electrical connectors beside the brake master cylinder (this is on a 94 model). If you connect all 3, label them (two of them look very similar).
Remove the battery.
Remove the battery tray (see the battery tray paragraph on the clutch replacement page).
Disconnect the two front electrical connectors beside the brake master cylinder (BMC) (94 and later - not sure about earlier), and pulle the connectors forward and upward, out of the way.
Note the routing of the clutch hose. It comes through the bulkhead about 5" to the right of the brake master cylinder (looking from the front of the car). There's an electrical connection to the brake booster about 3" to the right of the BMC - the hose comes through the bulkhead about 2" to the right and 1 1/2 inches below that, behind the brake booster. The hose comes out below the bracket that ties the BMC to the ABS pump.
Break the connection between the rubber part of the hose and the pipe that goes to the slave cylinder - 12 mm and 15 mm wrenches.
Remove the 13 mm nut from the outlet pipe at the clutch master cylinder. Remove the pipe from the cylinder. As noted above, it's best to go ahead and remove the clutch master cylinder.
Pull the clutch pipe/hose assembly out from inside the car - it will probably take a good tug to free the grommet from its hole.
Feed the new assembly into the hole as far as it will reasonably go, then go to the engine compartment and pull it through, remembering the routing described above. Two people, one on each end, would be helpful. Position the grommet against the hole in the bulkhead. You can push it home with a long screwdriver now or later. I used my fingers on one side and a screwdriver to push the final side into place.
Once properly routed, tighten the connection to the pipe going to the slave cylinder.
Start the nut into the slave cylinder, being careful not to cross-thread it. If you can do it with the cylinder installed, you're home free; I had to remove the cylinder to get the nut started. If the cylinder is removed, position it approximately as it will be when installed, then get the nut started.
Reinstall the cylinder. Make sure the grommet is installed in the hole in the bulkhead. Check all connections. Reconnect any disconnected electrical connections. Reinstall the ECU (if so equipped), the battery tray and the battery.
Bleed the clutch.