I guess that I can finally say that the k24a2 swap is finally "finished"
I have been running the accord upper plenum, Because the 2006 to 2008 Does not have the provision for the idle air control valve.
It is known that the TSX intake has a larger plenum and fatter runners. It would appear that +06 intake has a slightly longer runner as well. the difference in the length of the runners between the 2004-5 vs the 2006-8 does not seem to be well documented.
With some modifications I should be able to do some testing (hopefully on a dyno) to see how they compare.
Top 2008 tsx
left 2005 accord-right 2005 TSX