The case I have already for the other 5-bay hotswap cage:
** 
http://www.copystars.com/sata_3bay_case.htm
Additional cabling necessary to convert:
http://www.pc-pitstop.com/sas_cables_adapters/AD8788-1.asp
http://www.pc-pitstop.com/sas_cables_adapters/F7H87D.asp
http://www.pc-pitstop.com/sas_cables_adapters/8888-1M.asp
http://www.pc-pitstop.com/sas_cables_adapters/AD8788-2.asp
Possible HBA options:
HP Smart Array P800 16-port PCIe SAS SATA Raid 512MB BBWC - $79.00
* http://www.ebay.com/itm/350751215323
53X3 DELL 12DNW PERC H200E 6gbps SAS PCI-e Dual Port HBA - $169.99
* http://www.ebay.com/itm/321110332091
HighPoint Rocket 2722 8-Port PCIe 2.0 x8 SAS/SATA controller - $199.00
* http://www.newegg.com/Product/Product.aspx?Item=N82E16816115117 (Rocket)
Areca ARC-1320-8x 8-port / 2x SFF-8088 External 6Gb/s SAS Non-RAID Host Bus Adapter - $345.00
* http://www.scsi4me.com/areca-arc-1320-8x-8-port-external-2x-sff-8088-sas-host-bus-adapter-non-raid.html