Help choosing heatsinks for dual proc MB 1366 Xeons

Hello, I have just purchased a supermicro X8DT6-F http://www.supermicro.com/products [...] MI=Y&SAS=N

It will be using two L5520 CPUs.

I need to figure out which heatsinks will work. I'd prefer tower heatsinks that can be pointed front to back to take advantage of the airflow already going that direction through the 4u case, plus they usually don't scream like most of the Xeon specific coolers tend to do (like on 1U boxes anyway).

The 4u case being used is a rosewill RSV-L4000.

The main issue that worries me is the crossbar you can see in the photos of the case. It *might* restrict height some on one of the CPUs. It can be removed easily enough as long as no one thinks it would leave the case exposed to folding itself in half or something else exciting.

(Moved from supermicro sub-forum due to low viewer volume in the sub-forum)
I guess worst case I could empty the case and drill new holes and move the crossbar (and hit the case with the air compressor before anything goes inside. Metal shavings and PCs together scare me). At a previous job management allowed construction people to work inside an active server room (by active I mean a few hundred 42u racks including multi-million dollar EMC drive arrays) and the construction workers cut metal pipes in the room. The poor hardware guys spent a very large amount of evenings and weekends cleaning metal shavings out of servers in an attempt to prevent the servers early deaths.