Hi Phenom,
It sounds like you have a nice TA-22. Love to see some pics, or even see it in real life if you are in Melbourne.
As far as tyres go... if you want something sticky, then I would go for a Formula-R type tyre. I am running a set of Yokahama A032Rs which are the "standard" tyre for the IPRA racing category. (http://www.ipravic.com.au)
A friend is running a set of D01Js (another Formula-R type tyre) on his 265rwkw(355rwhp) S6 RX7 & is very happy with these too.
Check out http://www.stuckey.com.au/new/racetyre.htm#D01J for some more details on sizes etc...