Hi - I was wondering if anyone could help me understand if a DIY HW2.5 to HW3.0 retrofit is possible? I am almost out of my factory warranty and found on eBay that a FSD computer (HW3.0) can be purchased for ~$1,200. Is it a plug and play upgrade from HW2.5? I only have base AP but would like to have HW3 as I feel there will be more feature disparity between HW2.5 and HW3.0 in the coming years.