i had stanza brakes under mine with a big rear swaybar and 15in TRX rims with 195/50s. needed tiny little supercheap spacers out back and i used to race it around Wanneroo Raceway with the All Fours Club back in 1999 - still had a stock A12 and 4spd but i linked the primaries and secondaries on the carby with some coathanger wire - was really responsive. drove all day on a 3/4 tank of fuel.
loved that car. might be looking for another one soon.