whats the best flywheel to use on the a15 i built for my dat 1200 ute with the original box.
i noticed the a15 is thicker than the a12 flywheel.

i need some advice ive just finished building my a15 for my dat 1200 ute and still havnt found a decent 5 speed box.
which fly wheel should i use for the original box the a12 or the a15 i noticed the a 15 flywheel is thicker.
or does any one in sydney have a 5 speed box