You found it. Thanks for the input. I have the mark viii headers but one side has a Cat built onto it and the other just doesn't look like it would flow very good, if i run into major issues with the exhaust i may revisit using them. I am starting to build the exhaust in the next couple day and have already had to pull the studs on the flanges and swap to bolts due to the proximity to the frame rails.
When i talked to wilwood they say that the 3/4 master is what they recomend with their slave, so i'll give it a shot if it doesn't work i'll probably go to a 1". Looking at my slave in almost the same configuration you are running I am concerned about the amount of travel available and if it will be enough.
The other thing I was curious about that i didn't see you mention was if you used the stock fuel lines and tank and if you have had any issues. I was planning on using the stock tank with a surge tank but haven't decided on fuel lines yet.