Any close ups of the external fin density/design on that core? While I agree a bigger IC is great, thickness is always a worry of mine on my setups. I won't ever run an extremely thick FMIC if the external fins are so densly packed that it seems that it is going to extremely inhibit flow to the radiator. Hence why I really like ETS cores as they don't focus 100% on intake charge cooling, but focus on street applications where keeping airflow through the core allowing enough air to the radiator is important as well. Garrett cores usually have a pretty dense external fin design from what I've seen.
Although it may not be as much of a concern considering you have an aluminum block now which may dissipate heat a bit better than the iron blocks... I'm just a worry wart when it comes to overheating, I can thank the old 1G for that
