that manifold looks o so sweet man!
yea i was also thinking the idea of cutting the header flange between ports, but obviously so was everyone else. but im not sure if that would make much of a difference in preventing cracking as the head would draw alot of heat out of that flange anyway?
were are you going to mount the external? or is that yet to be done?
u gona move your radiator overflow bottle?

once again very nice paul, im a envious