EXCUUUUUUUUUUUUUUUUSEEEE MEEEEEE.
P
Serious note, NA Skylines are a good way to enter the world of Skylines and RBs. You get used to it before you demolish your first pride and joy (you have no idea how many first turbo cars get written off).
I run a NA R34 with RB25DE Neo, my costs are:
Fuel: $60-$95 per 500 KMs on Premium 98 (prices vary, I use Shell VPower with Coles -8c dockets ), I fill up twice a week so $150-$200 P/w for me for suburban driving, squeezed out 600KMs
Rego: Whatever RMS charges, about $250-300 for me plus custom plates
Insurance: 3rd Part fire and theft, about $650-750, Comprehensive is a good $2.3k+ however long you've held your license for (had a quote for $6K fresh off my P's )
That's just figures for my R34 non turbo automanual as a daily car to and from work and plenty of casual driving, regular starts and stops, maybe a few little launches but other than that, no burnouts, no speeding, no revs and suburban driving. Gives you an idea.