2015+ front end body parts on 2012...?

[adrew]

I have a '12 Yaris L 3-door that looks like hell due to city life (needs a new bumper cover and both front fenders due to parking lot hit-and-runs).

I have found a few '15s with rear-end damage that are being parted out (wrong color, though, so haven't investigated further) and was wondering if all the bits underneath are the same -- like, if I bought the fenders/grille/bumper/headlights/etc., would it mount up to my '12 with no issues?

Any other suggestions?

• Anyone used those eBay vendors that ship prepainted parts to your house?
• Could I get OEM parts and drop them off at a body shop, then I install them? (not sure if shops would go for that)