I am not an expert but is there some sort of factor that keeps you from doing this. Drilling 4 more lugs and making type r wheels a universal 4 lug wheel?

 

lack of a solid hub, covered lug cap and + it would look terrible. i'm not even gonna mention anything about safety. ill let somebody else....

anyways, enkei also made similar designs called the rs-evolution, rc-s, es tarmac

 

lol.