As DanO, myself and a few others have experienced this is a challenging DYI. I have a procedure in the works, but have not been able to get back to it.
The key here is that there are a few things, that IF they go wrong, you will be very sorry you did it as a DYI, as in bent valves.
I would not discourage you, as long as you have the experience. Have you done a timing belt before? On a "V" engine? Have you done things like a clutch, trans rebuild, head gasket?
This is definately not a first time DYI. I have been working on cars for over 25 years and this one really had me thinking! Almost had a major "oh, s$%t" when I thought I bend a few valves.
So, my advise is DO YOUR HOMEWORK. Where are you located? I have the crankshaft holding tool and the correct breaker bar arrangement if you need it.
Frankly, I thought this issue with the crank bolt was the big challenge, it was a walk in the park, compared to timing the gears, bleeding the system, finding how to get to every cover bolt, etc. (read MarkB's comments in the FAQ, very inlightening)
As DanO mentioned, if you decide to do it we all would be happy to guide you through it. I will say, dispite all these cautions, and a few scary moments, I did have quite a big grin, when I took the car out on the road and it was cruising better then ever!!! I would not hesitate to do it again, with complete confidence.
Plan AT LEAST a full weekend the first time.
HTH,
LarryB