what is a rally spec engine?
if your chasing power out of a 4age then it would be the same as any other build right?
higher comp
cams
ECU+tune
ITBs closed in a box since its rally..wouldn't be smart to run open quads lol..
possible to just use a black top 20v 4age? they have been rated at 90kw at the wheels with a retune from a stock engine..
16v 4age is possible to do the same but you spend more money
there are a few shops that know their 4ages in Sydney so you wont need to sent it away