What are some tips for buying a Nissan GT-R?

I've been considering buying a Nissan GT-R, but I'm not sure what to look for. Can you share some tips for purchasing a used one?

When buying a used Nissan GT-R, make sure to check for any engine modifications and get a thorough inspection from a trusted mechanic.

Look for a GT-R with a documented service history and avoid ones that have been driven excessively hard.