It could be just an optical illusion, but it seems to me that the top hose is slightly squashed in the curves. Maybe a little more off the front section connecting to the radiator to ease this. Isn't the choke connected? Does that mean it has an electric choke, or somebody removed the mechanism, or simply that you don't need a choke in tropical Queensland.

Sounds to me like you've put together a pretty good car. Gives me the motivation to get working on the old Biegemobile & fit it with the L20B with 86.5 mm pistons & a 76 degree cam, & a R30 Stumpy box & a H190 diff with LSD centre & the...But it's just above freezing & there's always the weekend.