So, I guessing you already pulled the IP, timing gear cover and timing gear off your engine? If this is the case, it's not impossible to do but it feels like it when you're trying to do it. You'll need an inspection mirror and a bright flashlight. First, you need to make sure your #1 piston is at TDC then look for the matk on the cam gear that matches the one on the IP gear. (I can't remember what it looks like) Put JUST the gear in, make sure the marks are lined up perfectly then put the timing gear cover on. Once you have the cover bolted down, you need not worry about losing time or the gear moving, there isn't enough clearance to permit gear movement. Also, be sure when you bolt down the cover that you have the lip on the forward facing bottom of it aligned where its supposed to be.
