Yeah that is a great price.
Obviously would require a roll cage and race seat to mount up all the harness.
Plus recommend a wrap around head support seat (i know you have one Steve) and 'HANS' specific 6 point harness (3" to 2" shoulder belts, so its 2" over the hans, fits nicer on the hans then a 3" belt, but 3" is still ok.
Just a little picture i came across a while back to show the HANS device, it is a pic of Scott Pye's (V8 supercars) HANS and teathers after a crash at symmons plains in tassy this year. The short teather is brand new length, the long one is from the crash!
Heres the crash
http://youtu.be/In-s-n-cSZ8