Trick Flow Head dimensions compared to Stock Iron Head dimension

We are planning to use the Trick Flow heads on our low deck 400 in our early a-body. I may have a clearance issue between the master cylinder & valve cover using Trick Flow heads. Currently we are running stock iron heads with no clearance issues. In an effort to add additional clearance between the valve cover and master cylinder we will be using the Wilwood master cylinder along with the firewall relocation adapter plate. This will move the master cylinder over 7/8". I am hoping someone can tell me the Trick Flow head dimensions compared to Stock Iron head dimension. Unfortunately I do not have a set of Trick Flow heads to test fit. They cost a bit to much to just do a test fit.

Thanks for any and all imput.