okay it is not a valve cover job nor will it only take a couple hours. those are camshaft covers and to take them off the timing cover,chain,tensioner and all that wonderful mess must come out. so basically while your at it replace everything water pump, tensioner every bit of it better to do it now then 10 or even a 1000 miles down the road have to fix those. if your after more performance then find some secret camshalfts (if you don't know what those are search or be lazy and ask lol) or just buy some you'll have it open anyway. can't afford it thats understandable but if you do fix the leak do put all new parts in you won't wanna have to open it again for awhile.