Hey Dan,
good decision to think about a track only car :thumbsup:
as for my thourghts on what to get.. well i guess thats all about what you want to do and how fast you want to go..
I think the big question is what do you want to do in it?... circut sprints, or actual racing, like IPRA or super sedans, or tarmac rallys/sprints, or a bit of everything..?
one thing for certin, get the latest model you cant afford. Its all well and good to say that you should get a 1-3 with no electronic tricks, becaus you actually have to drive it... but that wont count for shit when someone is 5 secs a lap quicker in a later car. While the electronic tricks may help a bad driver to a certin point, a fast/good driver will still be faster, so dont forget that.
Rember its not just the brakes and electronic gagets that is improved post Evo 3, but also the suspension geometry is much improved, unsprung weight is improved with alloy parts, the whole chassis is improved. There is more to a fast lap/stage time than just power to weight.
It may be worth looking at established cars, as its hard (and costly) work to build a car first time out, and you will discover lots of things you wish you had done..
Here is some things to think about..
http://my105.com.au/classified.asp?id=13575 - looks very goodva very neat tarmac evo.. good fruit for the price..
http://my105.com.au/classified.asp?id=13646 - very awesome car..
http://my105.com.au/classified.asp?id=13735 - nice car and nice price, some what basic tho..
dont be scared off by ex gravel cars the undersides may look a bit average but they usually are well sorted and have all the fruit, its not a big job to change to tarmac spring rates, and the gravel valving often suits tarmac events well.. (and you can have a go at real motorsport once you get bored of driving in circles :w00t
The other thing to think about, is jumping into the car you want straight away, provided your sensible about it. Okay you could get something slower to start with to learn in, but you will end up spending thousands of dollars, only to have to go out and spend thousands to buy the car you could have had in the first place, only to have to learn to drive it all over again (or shunt it caus your over-confident)
three final things to think about...
1) dont be scared to shunt it, or you will.. everything can be fixed, and ALOT easier than in a road car
2) if you want to do this propperly, then you may have to be prepared to sell the GSR, as doing both motorsport and funding a nice streetcar isnt to much fun!
3) make sure you budged for equipment to go with, like good helmet, race suit, boots, gloves etc etc etc..