Talk:Research & Development/BMW 3.0 CSL Hommage/@comment-93.57.229.61-20170304104535/@comment-103.48.58.226-20170304194359

It is hard depends on your skills. you can see the no. of quality checks required  if you have competed in any rnd you can imagine the difficulty of this. But if you upgrade it above 1700 it wouldn't be so hard as the main prob is token  upgrades.