18" 8.5J E.T.30 will they fit with 215's!?!?

Hmmmmmmm got the chance of sone nice rims, just wish they were E.T 40 instead.
 
8x 18 et 30 you'll get away with not with 8.5 unless you roll the arches
 
Could you have them tooled to increase the ET?
 
I'd probably only get 3-4mm depending on how deep the backs are, it's just wasted money at the end of the day ;)