Has anyone found difficulty in getting aftermarket things put on at a body shop? I am trying to find a shop that can put on Stillen roof wing, polyurethane, paint it and stick it on, and am finding people haven't dealt with it?
Any idea what I should specifically say if you have had previous experience with this! Thanks.
Also any ball park prices on body work (not related to an accident

) would be appreciated as well.
Product
STILLEN : STILLEN Roof Wing
Guide
http://www.stillen.com/product_files/103719~inst.pdf
I'd be tempted to throw it on black (car is diamond graphite) but it came with a small rough spot in it (STILLEN!!) and their excuse was it should be sanded and painted.