[3e] Statting a spaceship radiator

[GURPS Fox]

So, my crazy mind has decided to give me more things to do (damn plot bunnies being like their namesake), and one of them is cored around Transhuman Space and Sins of a Solar Empire, of all things, with elements from Tomrrow's War and Traveller. [looks at self in confusion, yes, my brain can scare me at times]

Now, I was prototyping a spaceship (the Alen T Shepard class Corvette), which had been designed in a time period like Transhuman Space instead of the usual 'ignores heat'/'super-efficient hull radiators' that sci-fi usually uses (in-setting, those come in later). This means it'll need radiators... and I haven't found much in converting it to Vehicles 2e, just a blurb in GRUPS THS (3e) and some references to a GURPS 4e Space radiator rule.

Is there a way to convert that, or am I forced to ignore radiators?