I actually got the info for the fitment of the Volk TE37's in 18x7.5_ET43 (17 lbs) from Tim @ ImportHookup. Here is the link (I also contacted via PM to confirm): TE37 fitment
.... but like you said I too can't find the specs on Rays website
. I will take it off the list just to be safe, if they do exist and fit I can always add them later.
p.s. If anyone finds any other issues let me know, I then will update accordingly.