sweet....!
A thing of beauty.
That looks like it'll do da bidness - ie: for a 20-50% increase over stock
Seemingly thinner walls and less metal (thermal inertia) - but at the end of the day - wack this in and you still gotta have a 20-50% increase in your IC performance (rejection) to go with it.

And - I dont think you should be chasing 20-50% either - not if you want to go >20psi and a consistent <122F AIT.
We should be looking at 150% increase....(>20kW (70kBTU/hr)
That is - the OEM CAC is undersized for anything other than stock road driving and the ocassional WOT. Soon as you do a hill climb or get 100F + days or wannna do a 1/4 trap speed >100mph - it doesnt seem to have the performance to cope.

I mean - I had a look at some pullied logs last week with a Supercooler and water seperation kit etc included and it was choking (AIT's >120F) after 6 seconds from the get go. This is not good (without stating the bleeding obvious). And that's with only 40% extra boost.
Hey - the SL55 only runs 11psi - they cant get the heat rejection from the nose of the car.

However - I've got another idea for the IC and water side that could be worthwhile - but to avoid a hyjack I'll raise an alternate thread.

Air/Air - from an engineering perspective - not as good when comparing apples with apples...ie: frontal air surfaces - otherwise the SRT6/SLK32 would have not gone water over air. water hase 1000 x the heat capacity of air per Litre/quart.

Given all this talk - is it a fact that we have to pull our old CAC out to do the design or are there drawings available of the Valley, the hold down bolts and/or the old cooler??????