Good to know. I think it would be possible to cool a 3970X at stock with a custom loop with a single 120x38 rad like the EK CoolStream PE 120 and some low-profile right angle fittings. Unfortunately, there are no pump/block combo units for TR. There was this concept from Alphacool, but never saw the light of day sadly.
Unless it's possible to fit the smallest pump you could find somewhere in the case, but I doubt it.
Other than that, what about something like the Zalman LQ320, which I'm currently using -- 120x38 rad, rated for 340W TDP, uses standard Asetek mounting and has swivel fittings at the CPU end, but no swivel fittings at the rad, would that fit?
You could do custom loop with this pump, it should be small enough to fit somewhere:
Pumps
We offer a wide range of pumps for water cooling. From Laing D5 and DDC pumps to VPP and DC-LT pumps.
www.aquatuning.co.uk
It will probably still be pretty crammed, so I only recommend custom loop in this case to very experienced users.
It is a shame, this block on picture would be perfect!
AIO like this with radiator thicker than 30mm wont fit because you don't have enough space to bend the tubes.