Got some spacers at B2autodesigns from Charlie and Adrian. Great folks to work with BTW.
Did 20mm bolt on's front and back on a 2012 Roster Touring with Sport Package. Used B2's 20mm spacers and had no trouble along with saving 50 or 60 bucks.
AFAIK the quality of the B2 product was fine and hub centric, get back to you if they fly off
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The 19" Rays actually have a relief on the back side of the rims to accept the protruding studs. Makes me wonder if 15's would have worked on the front without requiring stud replacement, the extra 5mm is less than .2 of an inch.
20's do look good.