I know this is too soon to probably wonder but just curious to find out if the '18 a-spec rear bumper would straight fit the '17 models? I don't see why not, would be a nice upgrade for those of us that have the 1st gen tlx.

 

The cut lines look similar enough. But the downward-pointing exhaust "tips" would have to be cut and extended outward/connected to the 4" finishers on the Aspec.

Ideally the Aspec or GT side skirts and front lip should also be added to match the lower lines of the Aspec rear.

This is shaping up to be like the 3G, where every 04-06 owner and their moms were swapping 07-08 parts onto their cars to make it "perfect"

 

I still haven't decided if I like the new design better than the old one.