I haveput the details up so many times.
all it will cost you is two cams, a sensitive torque wrench, think it was 8Nm, and a couple of hours. Some feeler blades are also required.
All you have to do is follow the HAyne, but briefly,
1-unplug all hoses from cam cover and spark leads
2-undo all the screws on the cam cover, it may help to only slacken them a little at first and then undo when thay are all lose to prevent rounding.
3-the cams are held onto the cog y a big, tight nut, get this undone

4-undo all the bearings holding the cams down, not the oil route through these for your interest.
5-put new cams in
6-do what you just did backwards
7-you can put some liquid gasket on the sela if you want
8-take the car for a drive and feel the difference.
Also very important, be careful not to drop anyting down the chain side of your engine, it will take a long time and muchos effore to get it back.