E3D V6 bigger heatsink fan duct. 30mm to 40/50 V2 model

i still didn't test them, but i think the part that goes in contact with the heatsink will be pretty fragile. so install it carefully.
EDIT: made sure it was compatible with the best e3dv6 support on thingiverse and changed some stuff. ( https://www.thingiverse.com/thing:2193695 )
Removed the 60mm fan for now, but i think i will never upload it again because it's totally overkill.