welcome. glad to see another mopar running around on another continent. one of my previous customers just moved back to australia and took his car with him. he runs an original lemon twist yellow 73 scamp with a black vinyl top. i know australia is big, so i don't expect you to see him, but maybe. good luck and post some pics.
ps- like already said, if a sbc 350 was cheaper, then it is what it is. fly with it.