Yeah best contact him as I know he doesn't make too many sets in road car offset and in turn aren't cheap either.
They are ET45 but 7" wide johnny so will need a little work to fit.
4pots yes, the st2 speedlines I have are 7 inch and have about 10mm clearance, the et of 45 is putting me off as the wheel will be sticking out a bit and won't fit behind the lip on the arch and I don't want to change to coilovers..