Per the title any chance anyone has some old active 2u LGA1366 heatsink lying around they don't need?
Something like a Dynatron G666 would be ideal.
What size case are you going to be using them in? I've got a couple of supermicro LGA1366 4u heatpipe coolers for xeons (https://store.supermicro.com/4u-active-cpu-cooler-snk-p0035ap4.html), I even think they're still bubble wrapped!
Those would be amazing bad sadly I'm stuck with 2u.