Yeah, when i went through shannons for my GTR the guy said that they are very reluctant to even offer insurance on GTRs for guys aged under 25...according to him, skylines have been costing shannons alot of money.
Also, I dont think putting it in your parents name is going to make a difference, because you will still need to put yourself down as the most frequent driver, and as a result the premium goes back up, I checked it out a few years back using the online quoting system.