Check this one out: IBM G8264T Main System Board Bac 00083 00 | eBay not bad
Redundant power supplies: IBM G8264T 750W Power Supply 94Y8053 7001628 J000 | eBay
expensive
qsfp+ daughtercard: http://www.ebay.com/itm/IBM-G8264T-Main-System-Daughter-Board-BAC-00084-01-/371210745430
looks like a processor daughtercard: IBM G8264T Main System Daughter Board Bac 00104 01 | eBay
These run around $2600 new: IBM Rackswitch G8264 7309 HC4 48x 10GbE Ports 4X 40 GB QSFP 10 Gigabit Switch | eBay which is good
It depends on what you could BO for the parts but you may just need to figure fan pin-outs and could have a quieter high port count switch
Redundant power supplies: IBM G8264T 750W Power Supply 94Y8053 7001628 J000 | eBay
expensive
qsfp+ daughtercard: http://www.ebay.com/itm/IBM-G8264T-Main-System-Daughter-Board-BAC-00084-01-/371210745430
looks like a processor daughtercard: IBM G8264T Main System Daughter Board Bac 00104 01 | eBay
These run around $2600 new: IBM Rackswitch G8264 7309 HC4 48x 10GbE Ports 4X 40 GB QSFP 10 Gigabit Switch | eBay which is good
It depends on what you could BO for the parts but you may just need to figure fan pin-outs and could have a quieter high port count switch