Yeah, just looked at flights ~$380 round trip.
If I get say 15L/100km that's 120L of fuel I'll use, let's say I pay $1.40 p/L then I'm looking at spending ~$168 in fuel.
Only problem is, no car when you get to Albany if I fly.
No idea, however lots of genuine Nissan part numbers start with a 'K'. http://nissan.epc-data.com/skyline/bcnr33/3940-rb26dett/misc/F80/
'6935' seems to refer to a "console finisher", I reckon you're about on the money mate.
I always reccomend Galvsport in Osborne Park for anything Skyline/RB related. Josh, Gav and the guys are experts and look after some pretty high profile GT-Rs a lot of which are past SAU members. https://www.facebook.com/Galvsport/