He is making custom carbon fibre parts and has made a DC2 diffuser, sure he can do one for EK. He is currently making Spoon replica carbon lips. Looks very very good quality!
Well its a nice looking diffuser but buy the looks of things thats not a Honda????? Or a mean ass conversion!
I'd say it was a nissan because if you look at the rear hubs there's a bottom ball joint and i think it looks like a HCA's (rear wheel steering) system.
Thats 5mm aluminium i think and it looks to be just clipped on ready for tacking.
Anyway thats my view but am always know to be wrong