I'm a new memeber here please help. I own 2003 Audi A4 1.8T CVT 1.8t GGT code transmission. Purchased 2005 audi a4 1.8 cvt HCP code tranny. Huge issue, wondering if i can swap rear back harness(square shape from my tranny)TCM to HCP tranny which is round shape TCM. Everything else fits in terms of size. Your help will be much appreciated. Car is at the shop and mechanic isn't sure if he can do the job.