Firstly copyright infringement aside, the telltale models are WAY too cartoony for GTA, I would however use the same textures to model a normal GTA character, and use references from 1985HV for anything missing from the mod. Also to me the Telltale delorian doesnt look any different to me than the one created for BTTFHV, If i was an admin I would ban this thread as it only distracts and cheapens the epicness that is 'GTA Hill Valley Mod'.
As for the rippers with a superiority complex, It doesnt take a huge amount of effort to realise that most games can have models ripped by using 3D Ripper DX or checking out current game extraction developments at Xentax forum.
Just my 2 cents , stick that in your bong and dont smoke it because its bad for your health