I've had my HR for over 5 years and it still makes to smile every time I drive it, even bigger grins since changing the exhaust last year.
Someone local was selling their 370Z Rays in January so thought I'd try them out and whilst it's not a cheap exercise I've not been disappointed as they look great. I paid £500 for them including centre caps but no nuts or tyres. There's a few bits of kerb rash but I don't feel the need to refurb just yet as it's not that noticeable with silver wheels.
I expect you've read around the other threads but in case you haven't, to get them to fit you'll need to consider:
20mm hubcentric spacers for the front.
Flat seat nuts, not the taper seat ones that the 350Z Rays use - Nissan part number is 40224-JK00A for each standard and KE409-89991 for the locking four.
The ideal rear tyres are the same size as the 370Z uses, the fronts you ideally want 245/35 but it seems some people use 370Z spec 245/40 without problems.
I think 370Z centre caps are Nissan part number 40343-5Y700 for silver and 40342-JF00A for grey.
Juke centre caps fit apparently and come in a range of colours so if you paint the wheels a different colour you might be able to find caps that match.
Hope that helps.