Ok, about the un-piggybacking part...
I had the S-AFC in before the rebuild, and it worked fine then, so I am going to go ahead and rule that out, and save myself the trouble of unhooking it. Also, I was detonating before I installed the crane ignition, so I am gunna have to say that isn't the problem either. Other than that, there are really no other piggy backs.

As for the detonation,
It comes in about 2700rpm and hangs out until around 4000 rpm.
If I lean out the fuel mix it will stay sometimes until redline. And it doesn't really matter what throttle position, it is more based on the RPM. However, and this is kinda hard to explain. At certain loads/gears/ rpms/ etc., it takes a different throttle position. For instance, sometimes if it is detonating while I am trying to just gain a little speed say 45% throttle, I will give it 100% throttle and the detonating goes away. But in other gears at different speeds, etc. if I come off the throttle then it goes away.
I hope I didn't confuse anyone, and if there is something more specific you would like to know, I can tell you.

One thing I am not sure of at this point is how to find the 'exact' 0 point on the exhaust cam.

I can see when the timing marks are lined up, but for as far as 'exact' 0 goes... that is gunna be tricky. I will give it my best shot though.

I really appreciate the help, and if you all still sudgest getting rid of the piggy backs, then I will, I just think that in my opinion that can be ruled out.

thanks again!

Built block.
Refinished head.
Tuned suspension.
TURBO.