I believe that's a mATX case, so you won't have any real issues fitting VR-ready components in there.
Realistically, the requirements for VR aren't too high - GTX 970 as a minimum & a decent i5 with 8+GB RAM should do it fine, initially. VR is a work in progress though, being one of the early adopters would cost a bit in hardware. Early stages, the higher quality components you go with, the better. I assume the requirements will reduce over time though.
PokerTroller is right regarding the i5 & 970 (as a minimum), but I don't agree with much else in his build - especially the PSU.
I'm sure you have an HDD that could be reused, and maybe more.........but this build only keeps your case:
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