Are AWW and AEB cyl. head water jackets identical?

[turbotuner20v]

I'm porting my AWW cyl. head to match the AEB size and i'm wondering if i can go bigger w/o worrying:

right now the gasket matches, but there is a minor flare between the gasket and the valves vs. the 'straight shot' of the AEB head.

pic of my ported AWW head (hard to take w/ flash)



vs.

Adam's stock AEB head

[bobqzzi]

The castings are different.  i don;t think you will hit water jackets, but you can't replicate the AEB port, the small port has a different port floor.  I would really caution that without flow bench testing, it is quite possible to hurt flow rather than help it.