INSTALLING A SECOND HARD DRIVE IN A DELL XPS 430

Hi, I hope you'll be able to help.

I have a 7 year-old Dell XPS 430 with the following specs:

Intel Core 2 Quad Processor Q9400 (2.66GHz, 6MB, 1333MHz)

8GB (2GB x 2) DDR3 PC3-12800 Unbuffered RAM

Seagate Barracuda (ST3750630AS) 750GB (7200rpm) 3Gbps SATA 100 Hard Drive RAID 0

PSU 425W

My question is: can I add a second hard drive? There is a space for one (a vacant flexibay) and I've located a drive via the Dell website, which indicates compatibility with the XPS 430:

Origin Storage Hard Drive 1TB SATA 150 (Dell Part : A7201339)

Is this feasible?

Thanks and regards,

Martin