@tripleh
j18 in cultus not a bad idea..currently some in isloo is running j18 in suzuki khyber
but i will never recomand u this setup.....its 130ps engine...and u will be in moving in 1.8 catagory
so batter stay with g13b or g15a
currently we have swaped around 4 g15a in baleno and cultus and its batter then 1.6gti or any other suzuki engine..but yet every 1 has thier own experince
g15a is 100hp engine but using it in normal routine life is easy as well..