you dont need a track car or even a performance car to start track days.
I had my first taste back in 2001/02 at EC for a driver day with motoconcepts. Duncan and fatz did these days too and quite a few old members.
I did it in a VT commodore. this was my only car.
I did 2 track days in it, and 2 skid pan days.
the two skid pan days were great and learnt a lot on how to handle a car.
I then sold the VT,
bought an R33 and joined SAU NSW
did a couple more practice days at EC and skid pan days. these days were done with Automotion (Aaron McGill) and other days with autosports and John Boston. best bang for buck mod? seat time + driving instructor.
then decided I wanted to go a bit further.
modified the R33 for a bit of performance and safety. bought a daily drive so R33 if got damaged I could still get around.
joined the southern sporting car club and started to do supersprints. a good entry level motorsport class.
R33 became a money pit
sold R33
bought MX5 race car (still rego'd too!). still have a daily drive and trailer.
did more supersprints (won my class in 2009 - 2B)
now doing door to door in the MX5.
its not cheap, its hell fun, and it is dangerous.
if you have a level head on your shoulders you'll be right.
I have had some damage out there, not as bad as others but it does happen and be prepared for it.
CSH!
edit - sarge - brakes are only as good as the tyres you have...no point in having awesome brakes and the tyres not holding up to their task...
a good freshen up - DBA slotted, QFM pads, dot5 fluid, braided lines and a good set of street tyres